title: The spec did not pass validation, due to 1 error and 1 warning
body: <p>I am trying to publish my library with cocoas pod but I get this error saying [!] The spec did not pass validation, due to 1 error and 1 warning.</p>
  
  <p>Below is the podspec file content which I am using to for the initial information.</p>
  
  <pre><code>Pod::Spec.new do |s|
    s.name         = "EasyGrids"
    s.version      = "1.0.0"
    s.summary      = "EasyGrids is a control to create photo collections and grids easy"
    s.homepage     = "https://github.com/shoaibahmedqureshi/EasyGrids"
    s.license      = "MIT"
    s.author       = {"Shoaib Ahmed Qureshi" =&gt; "shoaib.elastica@gmail.com" }
    s.source       = {:git =&gt; "https://github.com/shoaibahmedqureshi/EasyGrids.git",:tag =&gt; "1.0.0"}
    s.requires_arc = true
    s.source_files  = "EasyGrids/*"
  end
  </code></pre>
  
  <p>Any help would be appreciated.</p>
  
  <p>Below is the complete output of command to verify pod file</p>
  
  <pre><code>pod spec lint --verbose
  
      EasyGrids (1.0.0) - Analyzing on macOS platform.
    Preparing
  
  Analyzing dependencies
  
  Inspecting targets to integrate
    Using `ARCHS` setting to build architectures of target `Pods-App`: (``)
  
  Fetching external sources
  -&gt; Fetching podspec for `EasyGrids` from `/Users/shoaibahmedqureshi/Desktop/EasyGrids/EasyGrids.podspec`
  
  Resolving dependencies of 
  
  Comparing resolved specification to the sandbox manifest
    A EasyGrids
  
  Downloading dependencies
  
  -&gt; Installing EasyGrids (1.0.0)
   &gt; Git download
   &gt; Git download
       $ /usr/bin/git clone https://github.com/shoaibahmedqureshi/EasyGrids.git
       /var/folders/dk/5yk3ccs53z30tdtnr29hn9l80000gn/T/d20180502-27371-1jbttzs
       --template= --single-branch --depth 1 --branch 1.0.0
       Cloning into '/var/folders/dk/5yk3ccs53z30tdtnr29hn9l80000gn/T/d20180502-27371-1jbttzs'...
   -&gt; EasyGrids (1.0.0)
      - WARN  | url: There was a problem validating the URL https://github.com/shoaibahmedqureshi/EasyGrids.
      - ERROR | [OSX] unknown: Encountered an unknown error (Pod::DSLError
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.3.1/lib/cocoapods-core/specification.rb:683:in `rescue in _eval_podspec'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.3.1/lib/cocoapods-core/specification.rb:676:in `_eval_podspec'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.3.1/lib/cocoapods-core/specification.rb:584:in `block in from_string'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.3.1/lib/cocoapods-core/specification.rb:581:in `chdir'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.3.1/lib/cocoapods-core/specification.rb:581:in `from_string'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.3.1/lib/cocoapods-core/specification.rb:564:in `from_file'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/sandbox/podspec_finder.rb:15:in `block in podspecs'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/sandbox/podspec_finder.rb:14:in `each'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/sandbox/podspec_finder.rb:14:in `podspecs'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/downloader.rb:82:in `download_request'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/downloader/cache.rb:171:in `download'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/downloader/cache.rb:154:in `block in uncached_pod'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/downloader/cache.rb:181:in `call'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/downloader/cache.rb:181:in `in_tmpdir'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/downloader/cache.rb:153:in `uncached_pod'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/downloader/cache.rb:33:in `download_pod'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/downloader.rb:42:in `download'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer/pod_source_installer.rb:120:in `download_source'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer/pod_source_installer.rb:60:in `install!'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer.rb:364:in `install_source_of_pod'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer.rb:329:in `block (2 levels) in install_pod_sources'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/user_interface.rb:85:in `titled_section'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer.rb:328:in `block in install_pod_sources'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer.rb:320:in `each'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer.rb:320:in `install_pod_sources'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer.rb:163:in `block in download_dependencies'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/user_interface.rb:64:in `section'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/installer.rb:161:in `download_dependencies'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/validator.rb:427:in `block in download_pod'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/validator.rb:427:in `each'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/validator.rb:427:in `download_pod'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/validator.rb:309:in `block in perform_extensive_analysis'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/validator.rb:303:in `each'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/validator.rb:303:in `perform_extensive_analysis'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/validator.rb:83:in `validate'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/command/spec/lint.rb:70:in `block in run'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/command/spec/lint.rb:57:in `each'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/command/spec/lint.rb:57:in `run'
  /Library/Ruby/Gems/2.0.0/gems/claide-1.0.2/lib/claide/command.rb:334:in `run'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/command.rb:52:in `run'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/bin/pod:55:in `&lt;top (required)&gt;'
  /usr/local/bin/pod:23:in `load'
  /usr/local/bin/pod:23:in `&lt;main&gt;'
  ) during validation.
  
  Analyzed 1 podspec.
  
  [!] The spec did not pass validation, due to 1 error and 1 warning.
  
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/command/spec/lint.rb:87:in `run'
  /Library/Ruby/Gems/2.0.0/gems/claide-1.0.2/lib/claide/command.rb:334:in `run'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/lib/cocoapods/command.rb:52:in `run'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.3.1/bin/pod:55:in `&lt;top (required)&gt;'
  /usr/local/bin/pod:23:in `load'
  /usr/local/bin/pod:23:in `&lt;main&gt;'
  </code></pre>