Increment to version 1.0.0

Renaming the gem being a breaking change, that's more or less what has
to be done.

Author: nilium

opengl-core.gemspec

@@ -4,7 +4,7 @@
 
 Gem::Specification.new { |s|
   s.name        = 'opengl-core'
-  s.version     = '0.0.1'
+  s.version     = '1.0.0'
   s.date        = '2013-06-20'
   s.summary     = 'OpenGL core profile bindings'
   s.description = 'OpenGL core profile (3.2 onward, no deprecated functionality) bindings for Ruby 2.x. Generated from new XML spec files.'