Remove non-ASCII char from initializer template

Upon installing Doorkeeper I got a warning from my linter that there were non-ASCII characters in a US-ASCII encoded file generated by Doorkeeper. Running `iconv` against the file found the culprit, which has been replaced by a standard space character within this commit.
Merge pull request #384 from damien/patch-1

Remove non-ASCII char from initializer template
Little *Request code adjustments

* Don't include unneeded files.
* Implement some rubocop suggestions.
* Edit them so they look more alike.

There's repeated code to DRY out.
Travis Ruby 2.1 fix

https://github.com/travis-ci/travis-ci/issues/2220