test(snapshot): reduce sleep to 400ms

Author: Adam Bradley

config/lib/ionic-snapshot.js

@@ -19,7 +19,7 @@ var IonicSnapshot = function(options) {
     self.platformId = browser.params.platform_id;
     self.platformIndex = browser.params.platform_index;
     self.platformCount = browser.params.platform_count;
-    self.sleepBetweenSpecs = options.sleepBetweenSpecs || 450;
+    self.sleepBetweenSpecs = options.sleepBetweenSpecs || 400;
     self.width = browser.params.width || -1;
     self.height = browser.params.height || -1;
     self.highestMismatch = 0;