Installed TOTP gem and added TOTP column to schema.

Gemfile.lock

@@ -99,6 +99,7 @@ GEM
     airbrussh (1.3.0)
       sshkit (>= 1.6.1, != 1.7.0)
     arel (6.0.4)
+    base32 (0.3.2)
     bcrypt (3.1.11)
     better_errors (2.4.0)
       coderay (>= 1.0.0)
@@ -237,6 +238,8 @@ GEM
     thor (0.20.0)
     thread_safe (0.3.6)
     tilt (2.0.8)
+    totp (1.0.0)
+      base32
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     uglifier (4.1.8)
@@ -277,10 +280,11 @@ DEPENDENCIES
   sass-rails
   sqlite3
   strip_attributes
+  totp
   tzinfo-data
   uglifier
   unicorn
   webrick
 
 BUNDLED WITH
-   1.16.1
+   1.16.2