Updating rspec syntax. Use skip instead of pending for not yet ready tests.
Fixes for Mods::Record class:
- updated rspec syntax for text
- ensured Mods::Record.new.from_url returns instance of Mods::Record
- included example usage in README
- expanded rdocs for Mods::Record.new.from_url method
Removing ruby 1.9.2 as a build target, since we require activesupport and it requires >= 1.9.3
Adding additional ruby versions to travis build