Use BinDeps to install Sundials before travis test

[papamarkou]

The test in ChemicalKinetics executes successfully on my computer, but fails on the travis server because of missing dependencies (the Sundials library needs to get installed before running the tests). Perhaps BinDeps can help sort this out.

[tkelman]

Some discussion on this here https://groups.google.com/forum/#!topic/julia-users/9H3rjxsQT-0

I got Sundials to build, mostly, with MinGW and posted Windows binaries, but I need some further grepping to hunt down an undefined reference to get one of the libraries to build. For Linux we can probably do basic autotools configure, make. There's a rather simple Homebrew formula for Sundials https://github.com/Homebrew/homebrew/blob/master/Library/Formula/sundials.rb that could potentially be used to make Mac binaries if users aren't expected to have compilers installed.

[acroy]

I guess we can close this issue since we now have BinDeps integration via #12.