Added leaky relu layer
fixed caffe.proto comments for LRELU
Merge branch 'dev' into lrelu_layer

Conflicts:
	Makefile.config.example
	docs/index.md
	src/caffe/proto/caffe.proto
Merge commit 'afc6b4ee14642e477c4b39ac8d79d3f8bca07694' into lrelu_layer

Conflicts:
	docs/index.md
Merged LRELU functionality into RELU, added unit test
Merge commit '87027469dd9f07b15a54a0c96b2280d4a95fef84' into lrelu_layer
fixed lint complaints
Merge branch 'lrelu_layer' into dev