Address final nits.

Author: Mike Ng

src/Optimizely/Event/Builder/EventBuilder.php

@@ -217,7 +217,7 @@ public function createImpressionEvent($config, $experimentKey, $variationKey, $u
      *
      * @param $config ProjectConfig Configuration for the project.
      * @param $eventKey string Key representing the event.
-     * @param $experimentVariationMap array Map of experiment id to the id of the variation that the user is bucketed into
+     * @param $experimentVariationMap array Map of experiment ID to the ID of the variation that the user is bucketed into.
      * @param $userId string ID of user.
      * @param $attributes array Attributes of the user.
      * @param $eventTags array Hash representing metadata associated with the event.

src/Optimizely/Optimizely.php

@@ -191,13 +191,13 @@ private function validateUserInputs($attributes, $eventTags = null) {
 
     /**
      * Get the experiments that we should be tracking for the given event. A valid experiment
-     * is one that is in "Running" state and for which the user has been bucketed into.
+     * is one that is in "Running" state and into which the user has been bucketed.
      *
      * @param  $event string Event key representing the event which needs to be recorded.
      * @param  $user string ID for user.
      * @param  $attributes array Attributes of the user.
      *
-     * @return Array Of objects where each object contains the id of the experiment to track and the id of the variation the user is bucketed into.
+     * @return Array Of objects where each object contains the ID of the experiment to track and the ID of the variation the user is bucketed into.
      */
     private function getValidExperimentsForEvent($event, $userId, $attributes = null) {
         $validExperiments = [];

tests/BucketerTest.php

@@ -282,7 +282,7 @@ public function testBucketInvalidExperiment()
         );
     }
 
-    public function testBucketValidExperimentNotInGroupUserInForcedVariation()
+    public function testGetForcedVariationExperimentNotInGroupUserInForcedVariation()
     {
         $bucketer = new Bucketer($this->loggerMock);
         $this->loggerMock->expects($this->once())
@@ -295,7 +295,7 @@ public function testBucketValidExperimentNotInGroupUserInForcedVariation()
         );
     }
 
-    public function testBucketValidExperimentInGroupUserInForcedVariation()
+    public function testGetForcedVariationExperimentInGroupUserInForcedVariation()
     {
         $bucketer = new Bucketer($this->loggerMock);
         $this->loggerMock->expects($this->once())