Remove duplicate debugger gem entry

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
Remove .bundle/config

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
Cleanup ignore file

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
Re-add debugger gem and organize Gemfile

Signed-off-by: Aram Price <aprice@pivotallabs.com>