* Migrate to json based config. Move gemm test to integration.

* temp checkin

* checkin  example json

* [RUNTIME] Simplify dynamic library and code path.

* reword the readme

* Hardware generation fixes/sweep, auto scheduling for VTA conv2d

* Hardware generation fixes/sweep, auto scheduling for VTA conv2d

* derive hw spec from config file

* up to date hardware spec

* VTA python library
* Python unit tests
* End to end example with Resnet18
* README instructions
* Bug fixes

* code refactoring

* code refactoring

* code refactoring

* code refactoring

* fixing macro

* refactoring, tests, makefile

* style - making sure lint test pass

* prefixed macros with VTA, fixed bugs

* [DOCS] Initial docs

* update instruction

* [DOCS] Improve documents on deployment

* minor updates