Updated readme for better markdown formatting
Updated readme for better markdown formatting

Including:

* Converted links to markdown links
* Requirements is now a bullet-list
* Fixed a couple of missed tags
gaganawhad/globalize-cache-key,goarch/globalize,LyriD/globalize3,reevoo/globalize3,Buyapowa/globalize,awernick/globalize,mysociety/globalize,distribusion/globalize,eet-nu/globalize3,rdutra/globalize3,ASnow/globalize,trongrg/single_table_globalize3,tuv/globalize3,aalfson/globalize,andreazaupa/globalize3,2947721120/globalize,DaveahamLincoln/globalizer_refinery_patch