moved readme to markdown format
tidy
add my name to gem spec
remove test helper methods

`write_and_show` only saved the file
`show_file` mostly commented out
remove forced raise for testing in `save`
actually test the code
correct require path to test_helper

Not 100% happy with my hard-coded path,
but not sure how it should be
renamed klm to ruby_kml to reflect gem name
updated gemspec version
removed redundant files
update require for new gem name
Update rake tasks
remove readme from Rake task 
Default rake task to test
change version to made gem spec version
gemspec corrections - remove my name/details for PR/merge