Drop Lena image in favor of a cute cat photo

Social progress.
rename doc deploy script for better tab completion
re-time imagenet example on k20, instead of my laptop
add using std::isnan and use this-> when calling Test{For,Back}ward
Merge pull request #310 from jeffdonahue/clang-test-power-layer-fixes

clang fixes for test_power_layer
Back-merge docs and example image changes from `master` to `dev`
polished ignore
polished ignore
fix lint errors by adding 'explicit' to new single arg pycaffe
constructors
change some unnecessary TYPED_TESTs to TEST_Fs
add unit tests for cpu/gpu copy functions
add Adopt{Data,Diff} methods to blobs to enable "virtual copying"
change Adopt -> Share as suggested by kloudkl
sigmoid layer backward pass optimization: don't recompute forward pass
Merge pull request #319 from jeffdonahue/sigmoid-optimization

sigmoid layer backward pass optimization: don't recompute forward pass
Merge pull request #318 from jeffdonahue/blob-copy-by-reference

add Share{Data,Diff} methods to blobs to enable "virtual" copies

- reduce operations by not copying values
- spare memory by shared_ptrs
- simplify SplitLayer logic
Add possibility to use OpenBlas
Merge pull request #325 from AlOa/OpenBlas

Add possibility to use OpenBlas
rename python include config var to match lib
Give choice of ATLAS, MKL, and OpenBLAS (with option to override paths)

- configure build for ATLAS, MKL, or OpenBLAS on Linux and OSX
- allow overriding of the include or lib dirs
- replace magic numbers with BLAS names (atlas, mkl, open)

Follow-up from #305 and #325.