create NEWS.md and populate for MOI 0.1 and 0.2

NEWS.md

@@ -0,0 +1,22 @@
+MathOptInterface (MOI) release notes
+====================================
+
+v0.2.0 (prerelease)
+-------------------
+
+- Improvements to and better coverage of `Tests`.
+- Documentation fixes.
+- `SolverName` attribute.
+- Changes to the NLP interface (new definition of variable order and arrays of
+  structs for bound pairs and sparsity patterns).
+- Addition of NLP tests.
+- Introduction of `UniversalFallback`.
+- `copynames` keyword argument to `MOI.copy!`.
+
+
+v0.1.0 (February 28, 2018)
+--------------------------
+
+- Initial public release.
+- The framework for MOI was developed at the JuMP-dev workshop at MIT in June
+  2017 as a sorely needed replacement for MathProgBase.