Implement 0 / move to beginning of line.
:pencil: Cross off 0 implementation from docs.
Implement 'I' (insert at beginning of line)
Add tests for 'I'
Move left after exiting insert mode
Merge pull request #48 from joefiorini/exit-insert-mode

Move left after exiting insert mode
Add a changelog note for #48
Merge pull request #49 from dysfunction/master

Implement 'I' (insert at beginning of line)
Add documentation for #49
Document existing commands
Merge pull request #71 from jroes/move-to-beginning-of-line

Move to beginning of line
Update changelog for #71
Merge branch 'master' of github.com:atom/vim-mode