Added in the extra options needed in order to return the MARK option. (see the test case for a demo on how to use it) Updated it to the latest rust as well (extra EnumSet is now collections EnumSet)
Reverted the changed to the Makefile. Realized that I had the latest lib pcre compiled in there so maybe there is some difference between libpcre 8.3.0 and libpcre 8.3.2 that Im not aware of.
Small clean up in order to merge this into the master
Oops, missed a small detail in the Makefile
Merge pull request #12 from jroweboy/master

Added in the extra options needed in order to return the MARK option