Bootstrap D template

[Seb]

Have you ever wanted to use D in a project where not everyone had 
D installed or maybe you wanted to fix the compiler to a specific 
version?

I typically use a simple Makefile in such cases and download my 
preferred DMD and LDC version. As others who I have shown this 
have found this useful, I thought it might be helpful to other 
people (even so it's pretty straight-forward).

The cool part about this is that you don't have to worry about 
anything. People can just type `make` and everything works 
magically.

It's essentially a poor man's version of virtualenv for use cases 
where people are too lazy to use the install script or 
auto-env/dir-env can't be used either.

I added a few other common "boilerplate" things (CI integration, 
CodeCov, Documentation build, linting, ...) to this template:

https://github.com/wilzbach/d-bootstrap

Happy bootstrapping!

Why not Docker?
---------------

Docker is typically used to allow a consistent work environment, 
but in my use cases Docker isn't available.
If you want to use Docker, check out the [D docker 
images](https://hub.docker.com/r/dlanguage/dmd/).

Additional bonus
----------------

Want to use D in a Web IDE?
Use [Cloud9](https://aws.amazon.com/cloud9), clone this repo and 
run `make` - it will work out of the box.