grouped all installation instructions together and reworded some phrases
reworded some phrases about installation in the doc
Merge pull request #206 from kikito/runtime-snippets-doc

Runtime snippets doc
More documented
Fix :NeoSnippetClearMarkers behavior
Fixing typos in unite sources.
Merge pull request #211 from jmatth/fix_rename

Fixing typos in unite sources.
Better English
Update vital
Fix #212 indentation behavior
Fix documentation
Merge remote-tracking branch 'shougo/master'