Update instructions to remember how to get this going on a fresh system

README.md

@@ -4,10 +4,6 @@
 Learning About Using Rust From Python via Tensor Toolbox
 
 ## Thoughts
-1. Python Bindings
-    * Python wrappings reside in ./py-tensor
-        * Local build via `maturin develop -r` in that directory
-    * See [pyO3](https://github.com/PyO3/pyo3) for more details.
 
 1. Pyttb is based on MATLAB.
 This is mostly a port from pyttb discarding the MATLAB.
@@ -16,6 +12,20 @@ There isn't an attempt to maintain 1:1 compatibility.
 1. We depend on ndarray and ndarray-linalg
     * See details on [ndarray-linalg](https://github.com/rust-ndarray/ndarray-linalg/blob/master/README.md) to get that to build
     * My path on ubuntu was:
-       * Install `gfortran`
-       * `cargo test --features=openblas`
-          * This installs the openblas crate which takes a bit the first time, but minimizes additional setup
+        * Install rustup
+        * For convenience (see ndarray for more options)
+            * apt install gfortran libopenblas-dev
+        * For code coverage
+            * apt install pkg-config libssl-dev
+            * cargo install cargo-tarpaulin
+        * Check it out
+            * `cargo tarpaulin --features=openblas-system --skip-clean --engine llvm --exclude-files 'py-tensor/**/*'`
+
+1. Python Bindings
+    * Python wrappings reside in ./py-tensor
+    * See [pyO3](https://github.com/PyO3/pyo3) for more details.
+    * Easiest approach
+        * Create python env in preferred format
+        * cd py-tensor
+        * pip install -e .[dev]
+        * pytest tests