Update README.md

Moved build status next to title
Format go code.
Remove unreachable return.
Fix formatting directive in Error call.
Remove x bit from main.go.
Merge pull request #14 from benmanns/formatting-vetting

Formatting vetting
Merge branch 'permissions' of https://github.com/benmanns/massren into benmanns-permissions
Refactoring to support delete feature
Check that all the files have been processed
Merge branch 'delete_feature' of https://github.com/laurent22/massren into delete_feature