Merge pull request #25 from jaylevitt/master

Allow QWANDRY_EDITOR variable

Rakefile

@@ -1,6 +1,6 @@
 require 'rake'
 require 'rake/testtask'
-require 'rake/rdoctask'
+require 'rdoc/task'
 
 begin
   require 'jeweler'

lib/qwandry/launcher.rb

@@ -25,10 +25,10 @@ module Qwandry
     # Launches a Package or path represented by a String. Unless `editor` will
     # check against the environment by default.
     def launch(package, editor=nil)
-      editor ||= @editor || ENV['VISUAL'] || ENV['EDITOR']
+      editor ||= @editor || ENV['QWANDRY_EDITOR'] || ENV['VISUAL'] || ENV['EDITOR']
       
       if (!editor) || (editor =~ /^\s*$/) # if the editor is not set, or is blank, exit with a message:
-        puts "Please either set EDITOR or pass in an editor to use"
+        puts "Please set QWANDRY_EDITOR, VISUAL or EDITOR, or pass in an editor to use"
         exit 1
       end