[pod setup] Remove write access option

This is no longer relevant with trunk

Closes #2519
[Rubocop] Silence some warnings
Cleanup deadcode
[CHANGELOG] Fix typo.
Merge pull request #2527 from devxoul/patch-1

[CHANGELOG] Fix typo.
[SourcesManager] Dont take into account trailing .git when finding repo by URL

See https://github.com/CocoaPods/CocoaPods/issues/2526#issuecomment-56986262
[Changelog] Add entry for ignoring trailing `.git` in comparing source URLs
[gemspec] Bump to cocoapods-downloader to 0.7.1
[gemspec] Bump cocoapods-try
[Bundle] Update
Release 0.34.1
[init] Generate ruby code using single '

Since this would produce code which isn't compliant to our own
styleguide/rubocop