fix 3 rubocop errors

Changes are purely for style purposes in accordance to rubocop.yml
settings. These four changes now permit a git commit without skipping
via SKIP=RuboCop.

JacobEvelyn#78

lib/friends/activity.rb

@@ -14,7 +14,11 @@ class Activity
 
     # @return [Regexp] the regex for capturing groups in deserialization
     def self.deserialization_regex
-      /(#{SERIALIZATION_PREFIX})?((?<date_s>\d{4}-\d\d-\d\d)(:\s)?)?(?<description>.+)?/
+      %r{
+        (#{SERIALIZATION_PREFIX})?
+        ((?<date_s>\d{4}-\d\d-\d\d)(:\s)?)?
+        (?<description>.+)?
+      }x
     end
 
     # @return [Regexp] the string of what we expected during deserialization

lib/friends/friend.rb

@@ -11,7 +11,11 @@ class Friend
 
     # @return [Regexp] the regex for capturing groups in deserialization
     def self.deserialization_regex
-      /(#{SERIALIZATION_PREFIX})?(?<name>[^\(]+)(\((?<nickname_str>#{NICKNAME_PREFIX}.+)\))?/
+      %r{
+        (#{SERIALIZATION_PREFIX})?
+        (?<name>[^\(]+)
+        (\((?<nickname_str>#{NICKNAME_PREFIX}.+)\))?
+      }x
     end
 
     # @return [Regexp] the string of what we expected during deserialization

test/introvert_spec.rb

@@ -2,8 +2,10 @@
 
 describe Friends::Introvert do
   # Add readers to make internal state easier to test.
-  class Friends::Introvert
-    attr_reader :filename, :activities, :friends
+  module Friends
+    class Introvert
+      attr_reader :filename, :activities, :friends
+    end
   end
 
   # Add helpers to set internal states for friends and activities.
@@ -318,7 +320,8 @@ def stub_activities(val)
     after { File.delete(filename) if File.exists?(filename) }
 
     it "returns the modified friend" do
-      friend = Friends::Friend.new(name: "Jeff", nickname_str: "a.k.a. The Dude")
+      friend = Friends::Friend.new(name: "Jeff",
+                                   nickname_str: "a.k.a. The Dude")
       stub_friends([friend]) do
         subject.must_equal friend
       end