Sort the function history

We lost the sorting when we introduced concurrency in parsing the
different versions. Bring it back.

Author: carlosmn

docurium.gemspec

@@ -13,7 +13,7 @@ Gem::Specification.new do |s|
   s.description = s.summary
   s.license = 'MIT'
 
-  s.add_dependency "version_sorter", "~>1.1"
+  s.add_dependency "version_sorter", "~>2.0"
   s.add_dependency "mustache", "~> 0.99"
   s.add_dependency "rocco", "~>0.8"
   s.add_dependency "gli", "~>2.5"

lib/docurium.rb

@@ -188,6 +188,11 @@ def generate_docs
 
     end
 
+    # We tally the sigantures in the order they finished, which is
+    # arbitrary due to the concurrency, so we need to sort them once
+    # they've finsihed.
+    sort_sigs!
+
     project = {
       :versions => versions.reverse,
       :github   => @options['github'],
@@ -288,6 +293,14 @@ def tally_sigs!(version, data)
     end
   end
 
+  def sort_sigs!
+    @sigs.keys.each do |fn|
+      VersionSorter.sort!(@sigs[fn][:exists])
+      # Put HEAD at the back
+      @sigs[fn][:exists] << @sigs[fn][:exists].shift
+    end
+  end
+
   def find_subtree(version, path)
     tree = nil
     if version == 'HEAD'