Added a bunch of mappings and settings.
Added a bunch of mappings and settings.

- super+w and super+q now delete window globally
- super+backspace now brings up helm resume buffer
- super+f finds file in current project (fuzzy)
- super+F finds contents of all files in current project
- super+[1|2|3] opens/switches tabs
- super+4 closes current tab
- open each (different) make command in separate buffer
- format elm source code on save
- add crystal mode
- add chruby support

mrrooijen/dotfiles