Merge pull request #130 from seanhussey/patch-1

Fix typo

lib/ruby-oci8.rb

 if caller[0] !~ /\/bundler\/runtime\.rb:\d+:in `require'/
-  warn "Don't requie 'ruby-oci8'. Use \"require 'oci8'\" instead. 'ruby-oci8.rb' was added only for 'Bundler.require'."
+  warn "Don't require 'ruby-oci8'. Use \"require 'oci8'\" instead. 'ruby-oci8.rb' was added only for 'Bundler.require'."
 end
 require 'oci8'