Added basic information and basic operations to neural
Removed an unused package
Added a function to update the output value
Removed an unused package
I have created a test for a single neuron
Refactorized code.
Corrected some test. I wrote some wrong test methods like assert that a
new neuron has not an empty list.
Corrected the class.

Now the class pass all the test. It need to be refactored in some cases.

For example, the neuron always updated the output when a input change.
It can improve the perfomance if it update the value only when you want
to see it and it was changed it inputs.
Refactored the code.

I have added fixtures to the test case, so now It don't have repeated
code.
Created first test for NeuralLayer class.

This test will describe the behavior of a NeuralLayer.
Refactored code.

The name Neural has been corrected to neuron. It implies that
Neural.java has been renamed to Neuron.java too.
Refactored code.

The name of the test has been changed from NeuralTest to NeuronTest
because it has been changed Neuron class before.
Refactored the code

NeuralLayer and NeuralLayerTest has been renamed to NeuronLayer and
NeuronLayerTest respectively.

Also NeuronLayer has a default new constructor.
Added addNeurons method

This method accepts an undefined number of neurons and add they
to the layer
Added comments to addNeurons method
Revised tests

- Added to all test the mark @Test.
- Completed the setUp method
Refactored Neural to Neuron
Created test for getNeurons
Validated getNeurons method
Added a test for addNeurons