added some code to Util to generate colour tables, most of it and the… #134

	name: PyNGL Linux

	on: [push, pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name : Add System Packages
	run : \|
	sudo apt-get update
	sudo apt-get -y install libxinerama-dev libxcursor-dev xorg-dev libglu1-mesa-dev python-dev-is-python3

	- name: install vcpkg
	run : \|
	git clone --depth 1 https://github.com/microsoft/vcpkg ~/vcpkg
	cd ~/vcpkg
	./bootstrap-vcpkg.sh
	./vcpkg install glfw3 gl3w gtest fmt freetype glm rapidjson rapidxml pybind11
	- name: Configure
	run: \|
	mkdir build
	cd build
	cmake -DCMAKE_TOOLCHAIN_FILE=~/vcpkg/scripts/buildsystems/vcpkg.cmake -DNO_OIIO=1 -DPYNGL_ONLY=1 -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3 .. \

	- name: Build
	run: \|
	cd build
	threads=`nproc`
	cmake --build . --parallel $threads
	find .
	- name: Test
	run: \|
	cd PyNGL/tests
	cp ../../build/pyngl ./pyngl.so
	which python3
	python3 -V
	ls
	# python3 -m unittest test_Mat2.py test_Mat3.py test_Mat4.py test_Obj.py test_Quaternion.py test_Random.py test_Util.py test_Vec2.py test_Vec3.py test_Vec4.py

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