Bump travis-core

Gemfile.lock

@@ -42,7 +42,7 @@ GIT
 
 GIT
   remote: git://github.com/travis-ci/travis-core.git
-  revision: 657d6e2380734140fb3f5a08b5f6363ba35002bc
+  revision: 60c1ad3cf3cf40aae24beece499c7fd441a4fa08
   specs:
     travis-core (0.0.1)
       actionmailer (~> 3.2.3)
@@ -53,7 +53,7 @@ GIT
       metriks (~> 0.9.7)
       multi_json
       postmark-rails (~> 0.4.1)
-      pusher (~> 0.9.2)
+      pusher (~> 0.11.0)
       railties (~> 3.2.3)
       rake (~> 0.9.2.2)
       redis (~> 3.0)
@@ -189,9 +189,9 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.3.1)
-    pusher (0.9.4)
+    pusher (0.11.1)
       multi_json (~> 1.0)
-      signature (~> 0.1.2)
+      signature (~> 0.1.6)
     rack (1.4.1)
     rack-cache (1.2)
       rack (>= 0.4)
@@ -233,7 +233,7 @@ GEM
       multi_json (~> 1)
       redis (~> 3)
       redis-namespace
-    signature (0.1.4)
+    signature (0.1.6)
     simple_states (0.1.1)
       activesupport
       hashr (~> 0.0.10)