DOC: Add updates to BUILD in contrib guidelines (#57)

* DOC: Add updates to BUILD in contrib guidelines

Author: seanpmorgan

tensorflow_addons/custom_ops/README.md

@@ -14,14 +14,16 @@ In order to conform with the current API standard, all custom ops
 must:
  * Must be impossible to implement in one of the other API
  standards (Layers, Losses, etc.)
+ * Add the addon to the `py_library` in this sub-package's BUILD file
 
 #### Testing Requirements
  * Simple unittests that demonstrate the custom op is behaving as
     expected.
  * When applicable, run all unittests with TensorFlow's
   `@run_all_in_graph_and_eager_modes` decorator.
+ * Add a `py_test` to the custom-op's BUILD file
 
 #### Documentation Requirements
  * Update the table of contents in the project's central README
- * Update the table of contents in this sub-project's README
- 
+ * Update the table of contents in this sub-packages's README
+ 

tensorflow_addons/layers/README.md

@@ -15,14 +15,16 @@ must:
  * Inherit from either `keras.layers.Layer` or its subclasses.
  * [Register as a keras global object](https://github.com/tensorflow/addons/blob/master/tensorflow_addons/utils/python/keras_utils.py)
   so it can be serialized properly.
+ * Add the addon to the `py_library` in this sub-package's README
 
 #### Testing Requirements
  * Simple unittests that demonstrate the layer is behaving as expected.
  * When applicable, run all unittests with TensorFlow's
   `@run_all_in_graph_and_eager_modes` decorator.
  * Run `keras.testing_utils.layer_test` on the layer.
+ * Add a `py_test` to this sub-package's BUILD file
 
 #### Documentation Requirements
  * Update the table of contents in the project's central README
- * Update the table of contents in this sub-project's README
+ * Update the table of contents in this sub-package's README
 

tensorflow_addons/losses/README.md

@@ -14,14 +14,16 @@ must:
  * Inherit from `keras.losses.LossFunctionWrapper`.
  * [Register as a keras global object](https://github.com/tensorflow/addons/blob/master/tensorflow_addons/utils/python/keras_utils.py)
   so it can be serialized properly.
+ * Add the addon to the `py_library` in this sub-package's README
 
 #### Testing Requirements
  * Simple unittests that demonstrate the loss is behaving as expected on
  some set of known inputs and outputs.
  * When applicable, run all tests with TensorFlow's
  `@run_all_in_graph_and_eager_modes` decorator.
- 
+ * Add a `py_test` to this sub-package's BUILD file
+
 #### Documentation Requirements
  * Update the table of contents in the project's central README
- * Update the table of contents in this sub-project's README
+ * Update the table of contents in this sub-package's README
 

tensorflow_addons/optimizers/README.md

@@ -13,12 +13,14 @@ must:
  * Inherit from either `keras.optimizer_v2.OptimizerV2` or its subclasses.
  * [Register as a keras global object](https://github.com/tensorflow/addons/blob/master/tensorflow_addons/utils/python/keras_utils.py)
   so it can be serialized properly.
+ * Add the addon to the `py_library` in this sub-package's README
 
 #### Testing Requirements
  * When applicable, run all tests with TensorFlow's
  `@run_all_in_graph_and_eager_modes` decorator
-  
+ * Add a `py_test` to this sub-package's BUILD file
+
 #### Documentation Requirements
  * Update the table of contents in the project's central README
- * Update the table of contents in this sub-project's README
+ * Update the table of contents in this sub-packages's README
 

tensorflow_addons/utils/README.md

@@ -1,3 +1 @@
 # Addons Utils
-
-## Standard API