clean up
Merge branch 'master' of https://github.com/enkidulan/slidelint
added fontsize checker
added some fixes; cleanup
added travis image
added edges_danger_zone checker
remove python2.6 and python3.3 from travis cong
Update README.rst
added LibreOffice generated PFDs
added checkers config to default.cfg; added utils
added LanguageTool grammar checker
added nltk loading; fixed LanguageTool loading
added Language Tool checker
path fix
fixed server timeout
remove nltk
added regex based grammar checker and gender checker regex
added config for regex_grammar_checker
added documentation
added gendered_pronouns regex