Added release notes for RBTools v0.2 beta 2.
Added release notes for RBTools v0.2 beta 2.

halvorlu/rbtools,bcelary/rbtools,davidt/rbtools,reviewboard/rbtools,reviewboard/rbtools,Khan/rbtools,haosdent/rbtools,halvorlu/rbtools,datjwu/rbtools,clach04/rbtools,halvorlu/rbtools,davidt/rbtools,clach04/old_rbtools_0.3.2,1tush/rbtools,clach04/rbtools_0.4.1,beol/rbtools,beol/rbtools,beol/rbtools,blair/pkg-rbtools,haosdent/rbtools,reviewboard/rbtools,Khan/rbtools,haosdent/rbtools,datjwu/rbtools,datjwu/rbtools,davidt/rbtools