Fixed the 'already initialized constant TAG' warning by converting to class level methods

Author: aforward

lib/docx/containers/paragraph.rb

@@ -8,7 +8,10 @@ class Paragraph
         include Container
         include Elements::Element
 
-        TAG = 'p'
+        def self.tag
+          'p'
+        end
+
 
         # Child elements: pPr, r, fldSimple, hlink, subDoc
         # http://msdn.microsoft.com/en-us/library/office/ee364458(v=office.11).aspx

lib/docx/containers/text_run.rb

@@ -13,7 +13,9 @@ class TextRun
           underline: false
         }
 
-        TAG = 'r'
+        def self.tag
+          'r'
+        end
 
         attr_reader :text
         attr_reader :formatting

lib/docx/elements/bookmark.rb

@@ -6,7 +6,9 @@ class Bookmark
       include Element
       attr_accessor :name
 
-      TAG = 'bookmarkStart'
+      def self.tag
+        'bookmarkStart'
+      end
 
       def initialize(node)
         @node = node

lib/docx/elements/element.rb

@@ -58,7 +58,7 @@ def copy
       module ClassMethods
         def create_with(element)
           # Need to somehow get the xml document accessible here by default, but this is alright in the interim
-          self.new(Nokogiri::XML::Node.new("w:#{self.const_get(:TAG)}", element.node))
+          self.new(Nokogiri::XML::Node.new("w:#{self.tag}", element.node))
         end
 
         def create_within(element)

lib/docx/elements/text.rb

@@ -3,7 +3,11 @@ module Elements
     class Text
       include Element
       delegate :content, :content=, :to => :@node
-      TAG = 't'
+
+      def self.tag
+        't'
+      end
+
 
       def initialize(node)
         @node = node