fix issue #9
fix issue #9

You can now read and write Twitter's somewhat strange JS files by using
this gem and doing:

    GrailbirdUpdater::JsFile.read(file_path)
    GrailbirdUpdater::JsFile.read_required(file_path)
    GrailbirdUpdater::JsFile.write_with_heading(content, file_path, heading)

DeMarko/grailbird_updater