Add Docker dockerfiles for building the parser (centos6) and the parser with the Python shell (python).
Add README.md for Docker Hub info panel.  Adjust references to BLLIP repos.
Makefile uses time command when executing commands.
Merge pull request #25 from jimwhite/BLLIP_MASTER

Add Docker dockerfiles for building the parser
READMEs: add links to papers and bibtex