This commit is workaround for Github not rendering
`.. include::`.
This PR adds:
- Adds Makefile for creating conda environment under `env/conda` and
installs `rst_include` tool.
- Adds make README.rst target to generate `README.rst` from `README.src.rst`
- Has Travis CI run on repository and check that the `README.rst` file
has been rebuilt and committed if any of the dependencies have
change.
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>