bump some dependencies

Gemfile

@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 gem 'prawn'
-gem 'prawn-qrcode', :git => 'https://github.com/jabbrwcky/prawn-qrcode'
+gem 'prawn-qrcode'
 gem 'sinatra'
 gem 'excon'
 gem 'json'

Gemfile.lock

@@ -1,15 +1,7 @@
-GIT
-  remote: https://github.com/jabbrwcky/prawn-qrcode
-  revision: 08e457af2d6661ede3346a3a3dc3b99a9df9fd9b
-  specs:
-    prawn-qrcode (0.5.1)
-      prawn (>= 1)
-      rqrcode (>= 1.0.0)
-
 GEM
   remote: https://rubygems.org/
   specs:
-    chunky_png (1.3.11)
+    chunky_png (1.4.0)
     excon (0.73.0)
     json (2.3.0)
     mustermann (1.1.1)
@@ -18,13 +10,16 @@ GEM
     prawn (2.2.2)
       pdf-core (~> 0.7.0)
       ttfunk (~> 1.5)
+    prawn-qrcode (0.5.2)
+      prawn (>= 1)
+      rqrcode (>= 1.0.0)
     rack (2.2.2)
     rack-protection (2.0.8.1)
       rack
-    rqrcode (1.1.2)
+    rqrcode (2.2.0)
       chunky_png (~> 1.0)
-      rqrcode_core (~> 0.1)
-    rqrcode_core (0.1.2)
+      rqrcode_core (~> 1.0)
+    rqrcode_core (1.2.0)
     ruby2_keywords (0.0.2)
     sinatra (2.0.8.1)
       mustermann (~> 1.0)
@@ -41,7 +36,7 @@ DEPENDENCIES
   excon
   json
   prawn
-  prawn-qrcode!
+  prawn-qrcode
   sinatra
 
 BUNDLED WITH