Create .travis.yml

Added Travis-CI support.
Merge pull request #158 from linkerlin/patch-1

Create .travis.yml
updated readme
Merge branch 'master' of github.com:pcpratts/rootbeer1
fixing bugs with multi-gpu support. linux build.
fixing bugs with multi-gpu support. win build
fixing bugs with multi-gpu support. mac build.
Merge branch 'master' of git://github.com/pcpratts/rootbeer1 into develop

Conflicts:
	csrc/org/trifort/rootbeer/runtime/CUDAContext.c
	csrc/rootbeer.dylib
	csrc/rootbeer_cuda.dylib
	csrc/rootbeer_cuda_x64.dll
	csrc/rootbeer_cuda_x64.so.1
	csrc/rootbeer_cuda_x86.dll
	csrc/rootbeer_cuda_x86.so.1
	csrc/rootbeer_x64.dll
	csrc/rootbeer_x86.dll
	src/org/trifort/rootbeer/runtime/KernelLaunch.java