Two slight tweaks in the abstract:

1. comma -> semicolon

2. This one I'm not 100% sure on, but I don't like that the last
   clause uses "hope" twice.  I changed the first "we hope" to, "it is"
   where "it" refers to our intentions.  Still not sure if that's the
   clearest approach though.
Merge pull request #29 from embray/master

Two slight tweaks in the abstract: