Update gems.

Gemfile

@@ -1,3 +1,3 @@
 source 'https://rubygems.org'
 
-gem 'cocoapods', '~>1.2'
+gem 'cocoapods', '~>1.3'

Gemfile.lock

@@ -2,16 +2,16 @@ GEM
   remote: https://rubygems.org/
   specs:
     CFPropertyList (2.3.5)
-    activesupport (4.2.8)
+    activesupport (4.2.9)
       i18n (~> 0.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    claide (1.0.1)
-    cocoapods (1.2.1)
+    claide (1.0.2)
+    cocoapods (1.3.1)
       activesupport (>= 4.0.2, < 5)
-      claide (>= 1.0.1, < 2.0)
-      cocoapods-core (= 1.2.1)
+      claide (>= 1.0.2, < 2.0)
+      cocoapods-core (= 1.3.1)
       cocoapods-deintegrate (>= 1.0.1, < 2.0)
       cocoapods-downloader (>= 1.1.3, < 2.0)
       cocoapods-plugins (>= 1.0.0, < 2.0)
@@ -26,9 +26,9 @@ GEM
       molinillo (~> 0.5.7)
       nap (~> 1.0)
       ruby-macho (~> 1.1)
-      xcodeproj (>= 1.4.4, < 2.0)
-    cocoapods-core (1.2.1)
-      activesupport (>= 4.0.2, < 5)
+      xcodeproj (>= 1.5.1, < 2.0)
+    cocoapods-core (1.3.1)
+      activesupport (>= 4.0.2, < 6)
       fuzzy_match (~> 2.0.4)
       nap (~> 1.0)
     cocoapods-deintegrate (1.0.1)
@@ -46,8 +46,8 @@ GEM
     fourflusher (2.0.1)
     fuzzy_match (2.0.4)
     gh_inspector (1.0.3)
-    i18n (0.8.1)
-    minitest (5.10.1)
+    i18n (0.8.6)
+    minitest (5.10.3)
     molinillo (0.5.7)
     nanaimo (0.2.3)
     nap (1.1.0)
@@ -56,17 +56,17 @@ GEM
     thread_safe (0.3.6)
     tzinfo (1.2.3)
       thread_safe (~> 0.1)
-    xcodeproj (1.4.4)
+    xcodeproj (1.5.1)
       CFPropertyList (~> 2.3.3)
-      claide (>= 1.0.1, < 2.0)
+      claide (>= 1.0.2, < 2.0)
       colored2 (~> 3.1)
       nanaimo (~> 0.2.3)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  cocoapods (~> 1.2)
+  cocoapods (~> 1.3)
 
 BUNDLED WITH
-   1.14.6
+   1.15.4