Merge pull request #163 from athal7/branching

Clean up some branching code by using presence
travis test matrix against multiple tmux versions
Merge pull request #164 from tony/travis-multitmux

Travis test matrix against multiple tmux versions
[#100, #165] Add support for send-keys and multiple pane commands and fix pre_window not working for panes.
Bump version to 0.6.6.pre.2
Remove stray pry require.
Bump version to 0.6.6.pre.3
Spellfixes

Grammar Nazi fixes.
Merge pull request #166 from johnmcdonnell/patch-1

Spelling and grammar fixes.
Add a caveat to the readme regarding periods in project names.
Bump to 0.6.6.
Extract methods for tmux options and grepping.
Extract method for finding key values.
Remove reliance on grep.

* This prevents issues with user grep configuration..
Merge pull request #171 from drapergeek/jd-fix-index-issue

Remove use of grep for base-index
[Closes #169] Fix bugs in Config.default?.
Fix path for Rails log directory in sample

This was previously fixed in 01446a1 but then lost in 3614b80

I've updated the README for consistency
Merge pull request #177 from andyw8/fix_sample_config

Fix path for Rails log directory in sample
Completions for fish shell.
Update README for fish shell completions.