added rst
Synced up with dev branch
Merge pull request #413 from mrshu/rst-opt

Added rst support
Add a starter CONTRIBUTING.md
Fix link to issue in CONTRIBUTING.md
Test -s when a directory is not readable
Ignore permission errors from File::Next when using -s
Note fix to -s
Add number.txt to text swamp
Test that alternation works with -w
Enclose -w matches in a group

This allows the regex boundaries with work with other regex features
like alternation
Update Changelog
Add a completion script generator
Ignore generated completion scripts
Add more notes on what to consider when adding a new option
Specify which completion script to generate
Add Makefile rules for completion scripts
Update changelog to include completion scripts
Added documentation on available colors; fixes #26
Merge pull request #452 from jgbishop/issue_26

Added documentation on available colors; fixes #26