Merge pull request #11 from dayjobber/pretty

add 'formatting' option for prettier json
Add Configuration options and thanks
Merge pull request #13 from dayjobber/appraisal_and_override

easier overriding of Api superclass (+ Appraisal gem)
Merge pull request #14 from dayjobber/paths_in_tests

use more readable 'exist' rspec matcher
Output JSON in :pretty mode by default
Set defaults consistently from defaults constant
Fix issue with write_docs where apis parameter was effectively ignored
Ensure defaults are used when no configuration is set
Use DEFAULT_VER constant in tests instead of "1.0"
Tidy up default configuration messaging & tests
Remove warning for when using default configuration
Don't emit :default_config to the results hash - just test if generation succeeds with default config set