scanner and parser finished; depends on no external libs.  Lots of documentation on it and choice of textual representation grammar.
removed parselib; typos, remade pdf, etc.
added test3 test4 to test cases; scanner and parser now pretty robust; ignores (correctly scans and parses) multiple new lines at beginning, between, and at end of file
exporting sparse function to scan and parse input
Merge branch 'master' of https://github.com/m4b/derp-archer