Use modified shellsplit method to not remove backslash-escaping.

fixes #11
Handle KEYS the same as redis-cli and expect one argument.
Using minitest now.
First simple tests written.
Update sinatra.
Load sinatra in try-redis (and remove unused shellwords)
Reorder tests.
Move shellsplit into NamespaceTools
Test shellsplit
Rake for tests.
Move bundler to try-redis (so testing works)
Move helper methods into try-redis (for testing)
Test rack.