Merge pull request #13 from myxabrik/master

fixed GoPkg behaviour for more than 1 directory in GOPATH (Issue #12) an...
Merge pull request #14 from myxabrik/master

Some fmt fixes
Merge pull request #15 from myxabrik/master

Merge with Go 1.2 plugins
replace FS helpers with Vim builtins, no need for Homebrew on OS X
use native completion for commands instead ofGocodeCompletePkg