* assign default port to 9091 as the documented

* bug fix in printing RuntimeError and add an additional search path

* pretty print rebuild runtime args

* PRC => RPC

* replace vta_config.json file path

`build/vta_config.json` => `vta/config/vta_config.json`

* undo the change in adding lib_search path

* search vta_config.py file in vta/config

* avoid exposing driver function calls, and use predefined `VTAMemGetPhyAddr` instead.

* rename `tests/hardware/pynq` => `metal_test`

* set config path back to `build` dir

* [NNVM] Fix check in layout parsing

* add one workload

* fix graph transform for batch dimension

* fix

* fix

* removing programming out of end to end example for now

* updating TOPI library to use gemm tensor intrinsic

* bug fix, autoschedule in TOPI conv lib

* removing the deprecated GEVM intrinsic

* refactoring, fixed lint test

* fix for integer division bug

* python3 bug fix for non matching types due to float division

* comment

* 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

* [DOCS] Initial docs

* update instruction