unset grpc version and other fixes (GoogleCloudPlatform#445)

Author: bshaffer

.travis.yml

@@ -42,7 +42,7 @@ before_install:
   - mkdir -p build/logs
 
 before_script:
-  - travis_retry pecl install grpc-1.4.1
+  - travis_retry pecl install grpc
 
 script:
   - testing/run_all_tests.sh

spanner/test/spannerTest.php

@@ -56,7 +56,9 @@ public static function setUpBeforeClass()
         $instance = $spanner->instance(self::$instanceId);
 
         $operation = $instance->create($configuration);
-        $operation->pollUntilComplete();
+        if (!$operation->pollUntilComplete()) {
+            throw new \Exception($operation->error()['message']);
+        }
 
         self::$instance = $instance;
     }

speech/src/transcribe_sync_words.php

@@ -58,7 +58,7 @@ function transcribe_sync_words($audioFile, $languageCode = 'en-US', $options = [
 
     // Print the results
     foreach ($results as $result) {
-        $alternative = $result->alternatives();
+        $alternative = $result->alternatives()[0];
         printf('Transcript: %s' . PHP_EOL, $alternative['transcript']);
         printf('Confidence: %s' . PHP_EOL, $alternative['confidence']);
         foreach ($alternative['words'] as $wordInfo) {