Add local weather caching mechanism

models/Cache.js

@@ -0,0 +1,14 @@
+var mongoose = require( "mongoose" );
+
+var cacheSchema = new mongoose.Schema( {
+
+	// Stores the current GPS location as unique for weather data cache
+	location: { type: String, unique: true },
+
+	// This is the end of day value for the humidity yesterday
+	yesterdayHumidity:			Number,
+	currentHumidityTotal:		Number,
+	currentHumidityCount:		Number
+} );
+
+module.exports = mongoose.model( "Cache", cacheSchema );