Add search API and update frontend

The frontend has been updated to use the new search API.

lib/gollum/frontend/app.rb

@@ -130,8 +130,8 @@ module Precious
 
     get '/search' do
       @query = params[:q]
-      @search_command = "cd #{$path} && git grep -c '#{@query}' master"
-      @results = `#{@search_command}`
+      wiki = Gollum::Wiki.new($path)
+      @results = wiki.search @query
       mustache :search
     end
 

lib/gollum/frontend/views/search.rb

@@ -1,26 +1,12 @@
 module Precious
   module Views
     class Search < Layout
-      attr_reader :content, :page, :footer, :query
+      attr_reader :content, :page, :footer, :results, :query
 
       def has_results
-        !results.empty?
+        !@results.empty?
       end
 
-      def results
-        ret = []
-        @results.each_line do |line|
-          result = line.split(":")
-          file = result[1]
-          count = result[2].to_i
-          name = file.split(".")[0]
-          ret << {
-            :name => name,
-            :count => count
-          }
-        end
-        ret
-      end
     end
   end
 end

lib/gollum/wiki.rb

@@ -208,6 +208,28 @@ module Gollum
       end
     end
 
+    # Public: Search all pages for this wiki.
+    #
+    # query - The string to search for
+    #
+    # Returns an Array with Objects of page name and count of matches
+    def search(query)
+      search_command = "cd #{$path} && git grep -c '#{query}' master"
+      command_output = `#{search_command}`
+      results = []
+      command_output.each_line do |line|
+        result = line.split(":")
+        file = result[1]
+        count = result[2].to_i
+        name = file.split(".")[0]
+        results << {
+          :name => name,
+          :count => count
+        }
+      end
+      results
+    end
+
     # Public: All of the versions that have touched the Page.
     #
     # options - The options Hash: