New google speech api + microphone streaming

A very basic google speech api helper with microphone streaming to be used as base to others apps.

Instalation

```
npm install google-speech-microphone
`

Setup

1. Config Google cloud API
2. Install Sox, this lib uses node-record-lpcm16 thats requires Sox to work,
so if you are using MacOS just type brew install sox, and for others debian sudo apt-get install sox libsox-fmt-all


Usage example:
`javascript
var speech = require('google-speech-microphone');

speech.getSpeechService({
GOOGLE_APPLICATION_CREDENTIALS: 'location/project-auth.json',
GCLOUD_PROJECT: 'projectid'
})
.then(speechService => {
return speech.sync({ speechService });
})
.then(res => {
console.log(JSON.stringify(res));
})
.catch(err => {
console.log(err);
});

``

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Very usefull google cloud examples in node