a pretty readme so that people trust us

.github/workflows/test.yml

@@ -65,7 +65,7 @@ jobs:
       - name: Install gpuctypes
         run: pip install .
       - name: Test gpuctypes import
-        run: python3 -c "import gpuctypes.${{ matrix.task }}"
+        run: python3 -c "import gpuctypes.${{ matrix.task }} as ${{ matrix.task }}"
       - uses: actions/upload-artifact@v3
         with:
           name: Generated ${{ matrix.task }} Header

README.md

@@ -0,0 +1,25 @@
+## gpuctypes (a low level GPU library for Python)
+
+Do you wish that there were simple wrappers for GPU libraries in Python? Like not pyopencl, pycuda, and (HIP library someday?) here, but just raw access to the APIs?
+
+That's what gpuctypes does! While high level libraries have their place, the world needs more low level libraries. Like gpuctypes. Welcome home.
+
+### Installation
+
+```sh
+pip install gpuctypes
+```
+
+### Usage
+
+```py
+import gpuctypes.hip as hip
+import gpuctypes.cuda as cuda
+import gpuctypes.opencl as opencl
+```
+
+### Current versions
+
+* ROCm 5.7.1
+* CUDA 11.5
+* OpenCL whatever is in Ubuntu 22.04