added ExtractFiles.pm
added ExtractLines.pm
Added ExtractLines.pm
modified extract
edited extract
Add code to read and write API key to a pickle file so that it's not stored in the GitHUB repo.
extractLines.pm added
Merge branch 'pamela1'

Conflicts:
	python_scripts/notebook/mediacloud_python_api_test.ipynb
use extended format for regex; remove debug die
Merge branch 'master' of github.com:berkmancenter/mediacloud
Merge branch 'master' into RELEASE_20140325