Add events page and RSS feed

Drop previous orphan events pages
Drop site.post in sitemap.rb

_plugins/events.rb

@@ -0,0 +1,32 @@
+require 'yaml'
+
+module Jekyll
+
+  class EventPage < Page
+    def initialize(site, base, srcdir, src, dstdir, dst, date)
+      @site = site
+      @base = base
+      @dir = '/'+dstdir
+      @name = dst
+      self.process(dst)
+      self.read_yaml(File.join(base, srcdir), src)
+      self.data['date'] = date
+      self.data['category'] = 'event'
+    end
+  end
+
+  class EventPageGenerator < Generator
+    def generate(site)
+      #generate each event page
+      Dir.foreach('_events') do |file|
+        next if file == '.' or file == '..'
+        date = file.split('-')
+        next if date.length < 4
+        date = date[0] + '-' + date[1] + '-' + date[2]
+        next if !/^[0-9]{4}-[0-9]{2}-[0-9]{2}$/.match(date)
+        site.pages << EventPage.new(site, site.source, '_events', file, 'event', file, date)
+      end
+    end
+  end
+
+end