APS-27 bugfix: Fix DESC variable

- Incorrect ROLLNAME in DESC variable (copy/paste error)
  replaced with 'skeleton' so that rename_roll.sh will
  replace it with the new ROLLNAME.
APS-27 bugfix: 'skeleton' missing in README.md

- Replaced '<ROLLNAME>' with 'skeleton' in README.md so that rename_roll.sh
  will replace it with the new ROLLNAME.
APS-27 bugfix: Various version.sh updates

- Properly detect ROCKSVERSION and use to find appropriate
  annotated tag.
- Better detection of 'tagged downloads' (ie. NOT git repository)
- Better handling of missing annotated tag(s).
- Addition of '-a' option
Formatting/content changes
We don't support building on SunOS
Remove userguide from skeleton
Added default .gitignore
Updates to reflect current conventions.
Related to APS-27.
Add skeleton roll test.
Adapt current convention.
Add project URL to description.  Remove changelog.
Take out discussion of rpm naming--not always applicable.
Add mention of avx2 ROLLOPTS value.
Merge branch 'master' of ssh://forge.sdsc.edu:7999/sdsc/skeleton-roll into bugfix/APS-27-skeleton-roll-updates
Merge pull request #2 in SDSC/skeleton-roll from bugfix/APS-27-skeleton-roll-updates to master

* commit '8fefb4a9d461b8f815b21337757ea7e991819f4a':
  Take out discussion of rpm naming--not always applicable. Add mention of avx2 ROLLOPTS value.
  Add project URL to description.  Remove changelog.
  Adapt current convention.
  Add skeleton roll test.
  Updates to reflect current conventions. Related to APS-27.
  Added default .gitignore
  Remove userguide from skeleton
  We don't support building on SunOS
  Formatting/content changes
  APS-27 bugfix: Various version.sh updates
  APS-27 bugfix: 'skeleton' missing in README.md
  APS-27 bugfix: Fix DESC variable