Respect quiet option in Node API

This is an extension of #2268. Catches a few places missed the
first time around.

bin/node-sass

@@ -161,6 +161,12 @@ function getEmitter() {
     }
   });
 
+  emitter.on('info', function(data) {
+    if (!options.quiet) {
+      console.info(data);
+    }
+  });
+
   emitter.on('log', stdout.write.bind(stdout));
 
   return emitter;

lib/render.js

@@ -64,7 +64,7 @@ module.exports = function(options, emitter) {
       return done();
     }
 
-    emitter.emit('warn', chalk.green('Rendering Complete, saving .css file...'));
+    emitter.emit('info', chalk.green('Rendering Complete, saving .css file...'));
 
     mkdirp(path.dirname(destination), function(err) {
       if (err) {
@@ -76,7 +76,7 @@ module.exports = function(options, emitter) {
           return emitter.emit('error', chalk.red(err));
         }
 
-        emitter.emit('warn', chalk.green('Wrote CSS to ' + destination));
+        emitter.emit('info', chalk.green('Wrote CSS to ' + destination));
         emitter.emit('write', err, destination, result.css.toString());
         done();
       });
@@ -94,7 +94,7 @@ module.exports = function(options, emitter) {
             return emitter.emit('error', chalk.red('Error' + err));
           }
 
-          emitter.emit('warn', chalk.green('Wrote Source Map to ' + sourceMap));
+          emitter.emit('info', chalk.green('Wrote Source Map to ' + sourceMap));
           emitter.emit('write-source-map', err, sourceMap, result.map);
           done();
         });