Update PR template to mention including a branch name and including d…

…ocumentation (#132)

.github/PULL_REQUEST_TEMPLATE

@@ -4,7 +4,7 @@
 
 - If you are unclear on what should be written here, see https://github.com/wrf-model/WRF/wiki/Making-a-good-pull-request-message for some guidance. 
 
-- The title of this pull request should be a brief summary (ideally less than 100 characters) of the changes included in this PR.
+- The title of this pull request should be a brief summary (ideally less than 100 characters) of the changes included in this PR. Please also include the branch to which this PR is being issued.
 
 - Use the "Preview" tab to see what your PR will look like when you hit "Create pull request"
 
@@ -16,6 +16,9 @@ One or more paragraphs describing the problem, solution, and required changes.
 ## TESTS CONDUCTED: 
 Explicitly state what tests were run on these changes, or if any are still pending (for README or other text-only changes, just put "None required". Make note of the compilers used, the platform/machine, and other relevant details as necessary. For more complicated changes, or those resulting in scientific changes, please be explicit!
 
+## DOCUMENTATION:
+If this PR is contributing new capabilities that need to be documented, please also include updates to the RST files (docs/UsersGuide/source) as supporting material.
+
 ## ISSUE (optional): 
 If this PR is resolving or referencing one or more issues, in this repository or elewhere, list them here. For example, "Fixes issue mentioned in #123" or "Related to bug in https://github.com/NOAA-EMC/other_repository/pull/63"