Update oauth2 to version 1.3.0, it was breaking in curator

Author: mchaver

Gemfile.lock

@@ -2,20 +2,20 @@ PATH
   remote: .
   specs:
     creatubbles (0.0.1)
-      oauth2 (>= 1.2.0)
+      oauth2 (>= 1.3.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.2.5)
-    faraday (0.9.2)
+    faraday (0.10.1)
       multipart-post (>= 1.2, < 3)
-    jwt (1.5.4)
+    jwt (1.5.6)
     multi_json (1.12.1)
-    multi_xml (0.5.5)
+    multi_xml (0.6.0)
     multipart-post (2.0.0)
-    oauth2 (1.2.0)
-      faraday (>= 0.8, < 0.10)
+    oauth2 (1.3.0)
+      faraday (>= 0.8, < 0.11)
       jwt (~> 1.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)

creatubbles.gemspec

@@ -13,7 +13,7 @@ spec = Gem::Specification.new do |s|
   s.homepage = 'https://gitub.com/creatubbles/ctb-api-ruby'
   s.license = 'MIT'
 
-  s.add_dependency('oauth2', '>= 1.2.0')
+  s.add_dependency('oauth2', '>= 1.3.0')
 
   s.files = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- test/*`.split("\n")