Fix broken links in README

 - Closes #56

(cherry picked from commit 04db16b)

Author: zbeekman

README.md

@@ -94,15 +94,15 @@ We gratefully acknowledge support from the following institutions:
 [Google]: http://google.com
 [CINECA]: http://www.cineca.it/en
 [NERSC]: http://www.nersc.gov
-[NCAR]: http://ncar.ucar.edu
+[National Center for Atmospheric Research]: http://ncar.ucar.edu
 [INSTALL.md]: ./INSTALL.md
 [GASNet]: http://gasnet.lbl.gov
 [menu of services]: http://opencoarrays.org/services
 [CONTRIBUTING.md]: ./CONTRIBUTING.md
 [STATUS.md]: ./STATUS.md
 [GETTING_STARTED.md]: ./GETTING_STARTED.md
 [Google Groups]: https://groups.google.com
-[subscribing]: https://groups.google.com/forum/#!forum/opencoarrays/join
+[Google Group]: https://groups.google.com/forum/#!forum/opencoarrays/join
 [[email protected]]: mailto:[email protected]
 [Google Summer of Code]: https://www.google-melange.com
 [OpenCoarrays Google Group]: https://groups.google.com/forum/#!forum/opencoarrays)