adds Gemfile & Gemfile.lock
removes whitespace
methods now use snake_case rather than camelCase

This is typically convention in Ruby.
removes unnecessary 'return'
Changes file name to map_gather.rb

It's typically convention in Ruby to use underscores in file naming.
Merge pull request #2 from mdb/file_cleanup

File cleanup
Merge pull request #1 from mdb/gemfile

adds Gemfile & Gemfile.lock
Update README.md

Fix screenshot