Fix wrong brackets for yield call.

Only fails if alloca isn't enabled and of course I enable alloca 'cause
I can't resist using it for silly things.

Thanks to James Putt for the bug report.
Version 1.0.0.pre2

- Incorrect yield call in __temp_alloc__ fixed. (James Putt)
Rename Contributors to Acknowledgments.
Add James Putt. Reorder to be alphabetical for the sake of simplicity.
Prefix call to singleton class method with self.class (cf VertexArray)
Fix call to constant when binding a buffer with no target set
Call correct methods when binding Buffer
Bind the buffer before yielding to a passed block in #bind
Merge pull request #1 from puttj/master

Fix issues that cropped up during The Great Refactoring.
Fix unscoped const access.
Add a link to James's GitHub account now that he has one.
Version 1.0.0.pre3