start adding haskell scraper

lib/docs/scrapers/haskell.rb

@@ -0,0 +1,9 @@
+module Docs
+  class Haskell < UrlScraper
+    self.name = 'Haskell'
+    self.slug = 'haskell'
+    self.version = '7.8.2'
+    self.base_url = 'http://www.haskell.org/ghc/docs/7.8.2/html/libraries'
+
+    end
+end