Initial commit for 'rails new assignment3 --skip-active-record --skip-test-unit'
added auto generated Converters controller
added rspec
added rspec auto generated tests for  Converters
fix rspec conf
added tests for convertes controller
refactored tests added impl for converters controller
added converter_spec
added conversion tests
added tests for conversion
refactor tests added impl
fix typo
added tests for converter controller
refactor impl of converter_controller
added tests for Conveter.types
refactoring of Converter
impl rendering
tests refactoring. Added InvalidParameterValue errror and handler for it
added README.md
Subtree merged in assignment3