Start working on calls for Assertion API
Try clang++
Fix .travis.yml
Update Makefile

Attempt to fix build errors with clang
Work towards #4
Install libc++ for clang compilation

Method:

http://stackoverflow.com/questions/22111549/travis-ci-with-clang-3-4-and-c11
Fix paths for make
Move to correct directory

cd to build/nweedon/Earl
Update README and remove EarlAssert for merge to master
Merge pull request #5 from nweedon/dev

Dev => Master: Build with Clang++ 3.4