Fix #242: Refactor Timber::load_template to use filter 'template_include'.
Fix #242: Refactor Timber::load_template to use filter 'template_include'.

* Timber::load_template now uses the 'template_include' filter rather than do_action('template_redirect').
* See http://codex.wordpress.org/Plugin_API/Action_Reference/template_redirect

rpkoller/timber,anugupta/timber,gbarberi/timber,pensesmart/timber,Jmayhak/timber,gchtr/timber,joelgarciajr84/timber,josephbergdoll/timber,xavierpriour/timber,mgmartel/timber,xavivars/timber,aprendiendoando/timber,lucasmichot/timber,ogrosko/timber,aaemnnosttv/timber,PrisisForks/timber,xavierpriour/timber,pensesmart/timber,xavivars/timber,joelgarciajr84/timber,jnweaver/timber,blocher/timber,anugupta/timber,blocher/timber,gbarberi/timber,aaemnnosttv/timber,ogrosko/timber,josephbergdoll/timber,jnweaver/timber,rpkoller/timber,timber/timber,xavivars/timber,Jmayhak/timber,gchtr/timber,mojaray2k/timber,aprendiendoando/timber,mojaray2k/timber,rpkoller/timber,timber/timber,jarednova/timber,aprendiendoando/timber,lucasmichot/timber,anugupta/timber,ogrosko/timber,PrisisForks/timber,mgmartel/timber,blocher/timber,jarednova/timber,gbarberi/timber,jnweaver/timber,PrisisForks/timber,gchtr/timber,Jmayhak/timber,aaemnnosttv/timber,joelgarciajr84/timber,mojaray2k/timber,jarednova/timber,xavierpriour/timber,mgmartel/timber,pensesmart/timber,lucasmichot/timber,josephbergdoll/timber