title: pip install python-adb failed
body: <p>I want to install Python-adb using pip V9.0.3.</p>
  
  <p>When Im trying to install python-adb, but I always get the same error as you can see at the bottom.<br>
  I also tried it installing it per CMD with admin rights on pip/pip3.</p>
  
  <p>What I already tried:<br>
  - CMD with/without admin rights<br>
  - pip/pip3 installation<br>
  - installed mingw for C++ errors</p>
  
  <p>Im currently using Python3.6 on Windows 7 64Bit</p>
  
  <p>Output:</p>
  
  <pre><code>Collecting python-adb
    Using cached python_adb-1.1.1-py3-none-any.whl
  Requirement already satisfied: libusb1&gt;=1.0.16 in c:\users\alex\appdata\local\programs\python\python
  36\lib\site-packages (from python-adb)
  Collecting M2Crypto&gt;=0.21.1 (from python-adb)
    Using cached M2Crypto-0.29.0.tar.gz
  Requirement already satisfied: six in c:\users\alex\appdata\local\programs\python\python36\lib\site-
  packages (from python-adb)
  Installing collected packages: M2Crypto, python-adb
    Running setup.py install for M2Crypto ... error
      Complete output from command c:\users\alex\appdata\local\programs\python\python36\python.exe -u
  -c "import setuptools, tokenize;__file__='C:\\Users\\Alex\\AppData\\Local\\Temp\\pip-build-nwjmz2a0\
  \M2Crypto\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n')
  ;f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\Alex\AppData\Local\Temp\
  pip-1s9ml6zw-record\install-record.txt --single-version-externally-managed --compile:
      running install
      running build
      running build_py
      copying M2Crypto\ASN1.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\AuthCookie.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\BIO.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\BN.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\callback.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\DH.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\DSA.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\EC.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\Engine.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\Err.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\EVP.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\ftpslib.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\httpslib.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\m2.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\m2crypto.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\m2urllib.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\m2urllib2.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\m2xmlrpclib.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\Rand.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\RC4.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\RSA.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\six.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\SMIME.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\threading.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\util.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\X509.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      copying M2Crypto\__init__.py -&gt; build\lib.win-amd64-3.6\M2Crypto
      creating build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\cb.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\Checker.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\Cipher.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\Connection.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\Context.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\Session.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\SSLServer.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\ssl_dispatcher.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\timeout.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\TwistedProtocolWrapper.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      copying M2Crypto\SSL\__init__.py -&gt; build\lib.win-amd64-3.6\M2Crypto\SSL
      running build_ext
      building 'M2Crypto._m2crypto' extension
      creating build\temp.win-amd64-3.6
      creating build\temp.win-amd64-3.6\Release
      creating build\temp.win-amd64-3.6\Release\SWIG
      C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\x86_amd64\cl.exe /c /nologo /Ox /W3 /
  GL /DNDEBUG /MD -Ic:\users\alex\appdata\local\programs\python\python36\include -Ic:\users\alex\appda
  ta\local\programs\python\python36\include -IC:\Users\Alex\AppData\Local\Temp\pip-build-nwjmz2a0\M2Cr
  ypto\SWIG "-IC:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE" "-IC:\Program Files (x8
  6)\Windows Kits\10\include\10.0.10240.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\8.1\include\sha
  red" "-IC:\Program Files (x86)\Windows Kits\8.1\include\um" "-IC:\Program Files (x86)\Windows Kits\8
  .1\include\winrt" /TcSWIG/_m2crypto_wrap.c /Fobuild\temp.win-amd64-3.6\Release\SWIG/_m2crypto_wrap.o
  bj -D_CRT_SECURE_NO_WARNINGS -DTHREADING
      _m2crypto_wrap.c
      SWIG/_m2crypto_wrap.c(3557): fatal error C1083: Cannot open include file: 'openssl/err.h': No su
  ch file or directory
      error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\BIN\\x86_amd64\\cl.ex
  e' failed with exit status 2
  
      ----------------------------------------
  Command "c:\users\alex\appdata\local\programs\python\python36\python.exe -u -c "import setuptools, t
  okenize;__file__='C:\\Users\\Alex\\AppData\\Local\\Temp\\pip-build-nwjmz2a0\\M2Crypto\\setup.py';f=g
  etattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(
  code, __file__, 'exec'))" install --record C:\Users\Alex\AppData\Local\Temp\pip-1s9ml6zw-record\inst
  all-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\A
  lex\AppData\Local\Temp\pip-build-nwjmz2a0\M2Crypto\
  </code></pre>