Add some more instructions on how to build and setup CLion

Add more instructions on how to set up CLion.

Author: jparismorgan

documentation/Building.md

@@ -24,10 +24,17 @@ Alternatively, you can setup CLion, which is the suggested way to develop C++ in
   - Set `CMake options` to `G "Unix Makefiles" -DCMAKE_IDE=ON -DTileDB_DIR:PATH=/Users/<name>/repo/tileDB/build/dist -DTILEDB_VS_ENABLE_BLAS=on -DTILEDB_VS_PYTHON=off`.
     - Note that `DTileDB_DIR` will be specific to your TileDB installation. If you have it installed in a standard location, you can omit this option.
   - Set `Build directory` to `cmake-build-debug/libtiledbvectorsearch`.
+- Next right click on `src/CMakeLists.txt` and select `Load CMake Project`.
 - After that you should see configurations for unit tests and build targets automatically generated by CLion.
 
 ## Python
 
+Before building you may want to set up a virtual environment:
+```bash
+conda create --name TileDB-Vector-Search python=3.9
+conda activate TileDB-Vector-Search
+```
+
 To build for Python, run:
 
 ```bash