Initial commit for missiles branch
Correct typo in README
init rspec
remove comments from spec_helper.rb
added functional binary_tree_node.rb
added spec for binary_tree_node
removed trailing spaces
added file_input.rb
added spec for file_input.rb
changed to properly close the file
changed @file to file
added file_output.rb
added spec for file_output.rb
moved to spec/lib folder
changed to fulfill requeriments
changed test case to fulfill requeriments
added test for #rightmost_children presence
changed context to match actual tests context
added 'responds to' for better clarity
added empty missile_destruction_routes method