Improve message
Helper function to get bundle's base name
Refactor uninstaller.rb and change meaning of force switch

--force now means deleting without confirmation. Previously it means to
delete the bundle folder.
Improve the search for setting file
Fix formatting
Improve trimming bundle's name (remove all "vim" suffix, prefix)
Inline all attr_reader
Update comment
Update help message and README.md for `rm`
Puts the separator more consistently
Improve message for removing bundle from .vimrc
Abort the uninstaller if bundle name is too ambiguous
Skip . and .. when searching for setting files
Reduce method call Helpers.bundle_trim_name in loop
Use sub() instead of split()
Fix typo trimed
Delete bundle folder(s) even if bundle name is not exact
Add clean command