GO tool - replaces import pathes
* usage:
replaceimports [flags] -f "original-path" -r "new-path" [path ...]
* flags:
-l list files to be changed
-w write result to (source) file instead of stdout
-d display diffs instead of rewriting files
-f "original-path" import path to find
-r "new-path" import path to replace with
fork of "https://github.com/bradfitz/goimports"