Bump travis-core

Gemfile.lock

@@ -45,7 +45,7 @@ GIT
 
 GIT
   remote: git://github.com/travis-ci/travis-core.git
-  revision: ba517fee12866b01860d1149040f63d429002a82
+  revision: c5ceac066aeea4a5b3d84e66a165b8c188f13c9f
   specs:
     travis-core (0.0.1)
       actionmailer (~> 3.2.12)
@@ -129,7 +129,7 @@ GEM
       multi_json (~> 1.0)
     addressable (2.3.3)
     arel (3.0.2)
-    atomic (1.0.2)
+    atomic (1.1.7)
     avl_tree (1.1.3)
     backports (2.8.2)
     builder (3.0.4)
@@ -158,7 +158,7 @@ GEM
       thor (>= 0.13.6)
     hashie (2.0.0)
     hashr (0.0.22)
-    hike (1.2.1)
+    hike (1.2.2)
     hitimes (1.2.1)
     hubble (0.1.2)
       yajl-ruby (~> 1.1)
@@ -258,7 +258,7 @@ GEM
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
     thor (0.14.6)
-    tilt (1.3.6)
+    tilt (1.3.7)
     timers (1.1.0)
     treetop (1.4.12)
       polyglot