Use underscore naming instead of camel case. (tensorflow#88)

* Use underscore naming instead of camel case.

Renamed `momentumOptimizer.ts` -> `momentum_optimizer.ts`

* Merge branch 'master' into underscore-naming

Author: Lewuathe

src/index.ts

@@ -37,6 +37,6 @@ export {GPGPUContext} from './math/webgl/gpgpu_context';
 export {Optimizer} from './optimizer';
 export {CostReduction, FeedEntry, Session} from './session';
 export {SGDOptimizer} from './sgd_optimizer';
-export {MomentumOptimizer} from './momentumOptimizer';
+export {MomentumOptimizer} from './momentum_optimizer';
 // Second level exports.
 export {conv_util, gpgpu_util, render_ndarray_gpu_util, util, webgl_util};

src/momentumOptimizer.ts renamed to src/momentum_optimizer.ts

@@ -20,7 +20,7 @@ import {NDArrayMathGPU} from './math/math_gpu';
 import {Array1D, NDArray, Scalar} from './math/ndarray';
 import {FeedDictionary, FeedEntry, Session} from './session';
 import {SGDOptimizer} from './sgd_optimizer';
-import {MomentumOptimizer} from './momentumOptimizer';
+import {MomentumOptimizer} from './momentum_optimizer';
 
 import * as test_util from './test_util';