Bump Vagrant box version to 1.0.0.rc2.
Bump Vagrant box version to 1.0.0.rc2.

Vagrant 1.0.0.rc2 changelog:
https://github.com/DoSomething/vagrant-platform/releases/tag/v1.0.0.rc2

jonuy/dosomething,sergii-tkachenko/phoenix,deadlybutter/phoenix,sergii-tkachenko/phoenix,chloealee/dosomething,angaither/dosomething,deadlybutter/phoenix,chloealee/dosomething,DoSomething/dosomething,DoSomething/dosomething,jonuy/dosomething,mshmsh5000/dosomething-1,DoSomething/phoenix,mshmsh5000/dosomething-1,sbsmith86/dosomething,chloealee/dosomething,angaither/dosomething,deadlybutter/phoenix,angaither/dosomething,chloealee/dosomething,deadlybutter/phoenix,sergii-tkachenko/phoenix,sergii-tkachenko/phoenix,sbsmith86/dosomething,sbsmith86/dosomething,DoSomething/dosomething,DoSomething/phoenix,angaither/dosomething,DoSomething/phoenix,deadlybutter/phoenix,chloealee/dosomething,DoSomething/dosomething,chloealee/dosomething,sergii-tkachenko/phoenix,DoSomething/dosomething,sbsmith86/dosomething,sbsmith86/dosomething,DoSomething/phoenix,angaither/dosomething,jonuy/dosomething,DoSomething/dosomething,angaither/dosomething,jonuy/dosomething,jonuy/dosomething,jonuy/dosomething,DoSomething/phoenix,mshmsh5000/dosomething-1,sbsmith86/dosomething,mshmsh5000/dosomething-1,mshmsh5000/dosomething-1