add license, copyright in code comments
adds regex for removing extra newlines at the top of a file.  fixes assemble/assemble-yaml/#3
add `extractJSON` and `stripYFM` convenience methods and tests. add regex to strip extraneous newlines left over after YFM is removed from a file.
update readme and readme templates. rebuild
0.1.5
Merge pull request #4 from jonschlinkert/master

new convenience methods...