#31 Specify spin method within content itself

- added a new shortcode
- see Readme.md for more details.
#31 added `do_shortcode` on the spin title method

- added `do_shortcode` on the spin title method
- updated ordering for `wp_title` hook
some plugins checks the posts from wp_head

- handle post spins here
fixes on wp_title
Merge pull request #36 from deanearlbartolabac/wpheadtokencatch

some plugins checks the posts from wp_head
merge conflicts
Merge branch 'deanearlbartolabac-8-spin-all-option'
merge conflicts
Merge branch 'deanearlbartolabac-32contentspin'
Revert 2bae405..8655e3d

This rolls back to commit 2bae4056220839f07bef02d88b303da0ecee481d.
Merge branch 'master' into 8-spin-all-option