- Fixed sudo check.
Fix syntax
Merge pull request #291 from chocoby/master

Fix syntax
- Added FAQ.
- Improved post_filters.
- Fixed cleared preview buffer list.
- Improved default value in grep options.
- Don't use grepprg.
- Fixed unite#util#glob().
- Improved unite#custom#default_action().
- Added unite#variables#get_source_variable().
- Fixed rec command for ag.
- Changed tabopen behavior.
Revert "- Changed tabopen behavior."

This reverts commit f2c7665fab5fd0bb0701d38cdec5ebce59cc3a98.
- Improved no_quit behavior.
- Fixed for glob().
- Fixed no_quit behavior.
- Added converter relative.
- Fixed glob().
- Improved file source behavior.