Documented gulp.src() options, elaborated on gulp.glob() options, gulp.watch() events, removed options from gulp.dest(), elaborated on gulp.run() concurrency, clarified async tasks, fixed spelling errors, added link to node-optimist, added gulp.env example, be consistent when referencing methods in backticks, re-worded note about streams
Merge pull request #48 from lazd/funcdocs

gulp API documentation enhancements