update string-direction to 1.2.2

Gemfile

@@ -150,7 +150,7 @@ gem "twitter-text",      "1.14.7"
 
 # RTL support
 
-gem "string-direction", "1.2.1"
+gem "string-direction", "1.2.2"
 
 # Security Headers
 

Gemfile.lock

@@ -703,7 +703,7 @@ GEM
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     state_machines (0.5.0)
-    string-direction (1.2.1)
+    string-direction (1.2.2)
     swd (1.1.2)
       activesupport (>= 3)
       attr_required (>= 0.0.5)
@@ -917,7 +917,7 @@ DEPENDENCIES
   spring-commands-cucumber (= 1.0.1)
   spring-commands-rspec (= 1.0.4)
   sprockets-rails (= 3.2.1)
-  string-direction (= 1.2.1)
+  string-direction (= 1.2.2)
   timecop (= 0.9.1)
   turbo_dev_assets (= 0.0.2)
   twitter (= 6.2.0)