Added initial comparison and basic tests.
Now resetting smaller version numbers when bumping.
Added optional build name when bumping.

If bumping without a name, the build name is blanked.
Added tests of named bumping.
Added a bit more info to the readme.
Tried to improve sample highlighting.
Improved code example a little.
Split the code sample into smaller bits.
Fixed problem with comparisons.
Simplified two comparisons.
Added more comparisons examples.
Added more tests, for comparisons to fails.
Added example of bumping with build name.
Clarified readme example.
Added more to the initial example.
Added some failing tests.
Simplified and improved comparisons.
Merge pull request #2 from cknv/comparisons

Added initial comparison and basic tests.