Lexer for Inform 7
Add lexer for Inform 7 using download-grammars script
Remove grammar for Inform 6
Update tm_scope to match case used in Sublime-Inform
Version 4.0.1
Merge pull request #1727 from pchaigno/lexer-inform7

Lexer for Inform 7
Add CONTRIBUTING.md

This document tries to explain how to file various common kinds of bug
reports or enhancements.
Add a link to CONTRIBUTING.md from the README
Mention that grammars should be licensed
Merge pull request #1730 from github/more-docs

Add CONTRIBUTING.md
Gemfile.lock is nolonger considered generated
Merge pull request #1733 from github/gemfile-lock-not-generated

Gemfile.lock is nolonger considered generated
fix vendor/cache
Add FORTRAN samples.
Add Forth extensions .f and .for; add heuristics for Forth and FORTRAN.