Track abstract goals for Jasmine 2.0

GOALS_2.0.md

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+# Jasmine 2.0 Goals
+
+1. No globals!
+  * jasmine library is entirely inside `jasmine` namespace
+  * globals required for backwards compatibility should be added in `boot.js` (EG, var describe = jasmine.getCurrentEnv().describe lives in boot.js)
+1. Don't use properties as getters. Use methods.
+  * Properties aren't encapsulated -- can be mutated, unsafe.
+  * easier to refactor as needed
+