Add definitions for the Piwik NodeJS tracker

Piwik.org is a tracker similar to Google Analitics, but can run on your own server. These definitions are for the node api.

piwik-tracker/piwik-tracker.d.ts

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+// Type definitions for PiwikTracker v0.1.1
+// Project: http://piwik.org - https://www.npmjs.com/package/piwik-tracker
+// Definitions by: Guilherme Bernal <https://github.com/lbguilherme>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module "piwik-tracker" {
+	
+	export = PiwikTracker;
+	
+	// refer to http://developer.piwik.org/api-reference/tracking-api
+	interface PiwikTrackOptions {
+		// Required parameters
+		url : string;
+		
+		// Recommended parameters
+		action_name? : string;
+		_id? : string;
+		rand? : string;
+		apiv? : number;
+		
+		// Optional User info
+		urlref? : string;
+		_cvar? : string;
+		_idvc? : string;
+		_viewts? : string;
+		_idts? : string;
+		_rcn? : string;
+		_rck? : string;
+		res? : string;
+		h? : number;
+		m? : number;
+		s? : number;
+		ua? : string;
+		lang? : string;
+		uid? : string;
+		cid? : string;
+		new_visit? : number;
+		
+		// Optional Action info
+		cvar? : string;
+		link? : string;
+		download? : string;
+		search? : string;
+		search_cat? : string;
+		search_count? : number;
+		idgoal? : number;
+		revenue? : number;
+		gt_ms? : number;
+		cs? : string;
+		
+		// Optional Event Tracking info
+		e_c? : string;
+		e_a? : string;
+		e_n? : string;
+		e_v? : string;
+		
+		// Optional Content Tracking info
+		c_n? : string;
+		c_p? : string;
+		c_t? : string;
+		c_i? : string;
+		
+		// Optional Ecommerce info
+		ec_id? : string;
+		ec_items? : string;
+		ec_st? : number;
+		ec_tx? : number;
+		ec_sh? : number;
+		ec_dt? : number;
+		_ects? : number;
+		
+		// Other parameters (require authentication via token_auth)
+		token_auth? : string;
+		cip? : string;
+		cdt? : string;
+		country? : string;
+		region? : string;
+		city? : string;
+		lat? : string;
+		long? : string;
+		
+		// Other parameters
+		send_image? : number;
+	}
+	
+	class PiwikTracker {
+		constructor(siteId : number, trackerUrl : string);
+		track(options : PiwikTrackOptions) : void;
+	}
+	
+}