Merge branch 'dev'
add more screenshots
add about the feature to use previous input again
Merge branch 'dev'
improve the title
Merge branch 'master' of github.com:rhysd/clever-f.vim

Conflicts:
	README.md
tweak the place of the build status
some refactorings

- cosmetic change
- do not use clever_f#reset() to initialize
- add API for debug
add a test for g:clever_f_repeat_last_char_inputs