Added the 'SEARCH_FOR_CHANNEL' option that allows RVIC to look for grid cells with substantially high (10x) more upstream area and moving the pour point there before creating the parameters.

- Fixed a number of small bugs that came up during testing.
- Fixed a few formatting issues
Merge pull request #35 from jhamman/hotfix.1.0.2

Added the 'SEARCH_FOR_CHANNEL' option...