trie4j/src/main/java/org/trie4j/bv/BitVector01Divider.java
public void readFrom(InputStream is)
	throws IOException{
		DataInputStream dis = new DataInputStream(is);
		first = dis.readBoolean();
		zeroCounting = dis.readBoolean();
	}
public void readFrom(InputStream is)
	throws IOException{
		DataInputStream dis = new DataInputStream(is);
		first = dis.readBoolean();
		zeroCounting = dis.readBoolean();
	}
Read data from InputStream. This method doesn't care about
r0 and r1. Caller must load these bvs and set through setR0 and setR1.
@param is
@throws IOException