put normal random numbers in shared memory
Merge branch 'master' of github.com:sc932/MOE into jialei_gh297_speed_up_gpu_computation_on_EI_gradEI
update local changes before merge
Merge branch 'master' of github.com:sc932/MOE into jialei_gh297_speed_up_gpu_computation_on_EI_gradEI

Conflicts:
	moe/optimal_learning/cpp/gpu/gpp_cuda_math.cu
fix w.r.t. eliu's first round of review
Merge branch 'master' of github.com:sc932/MOE into jialei_gh297_speed_up_gpu_computation_on_EI_gradEI
fixes for new comments, docs-only changes
Merge branch 'master' of github.com:sc932/MOE into jialei_gh297_speed_up_gpu_computation_on_EI_gradEI
document max problem size before shared_mem runs out
a bit more fixes of docs, and updated CHANGELOG.md
a bit more...
Merge pull request #351 from Yelp/jialei_gh297_speed_up_gpu_computation_on_EI_gradEI

Jialei gh297 speed up gpu computation on ei grad ei