added features list

docs/features.md

@@ -0,0 +1,26 @@
+===============
+FEATURES / TODO
+===============
+
+- Parallel design
+- Sparse matrices
+- Discontinuous Galerkin?
+- 100% Tested
+  - Automatic coverage (Travis CI)
+- Doctest examples and tutorials
+  - Intuitive to use
+- Marketing
+  - Engineering porn
+- Field functions
+- Multiphysics platform
+  - Elasticity
+  - Thermal implemented
+- Transient and steady solvers
+  - Implicit dynamics
+- Nonlinearities
+  - Geometrical
+  - Material
+  - Contact
+    - Mortar
+- Modular design
+  - E.g. contact formulation can be altered by user