Hello, world!

Initial empty repository commit.
Genesis commit

This first commit initialises the repository with some essential
information, namely, a copy of the MIT license, documentation and git
ignore files.
Add the kernel build system

The build system consists of a very simple three-tier Makefile
scheme. At the root of the source tree there is the top level
Makefile. The kernel Makefile (located in scripts/Makefile.kernel)
defines build routines specific to the kernel, and calls the third level
of Makefile (located in arch/<arch>/Makefile.<arch>) which defines the
build configuration specific to that particular architecture.
Add a script to generate tags files

This enables the "make tags" and "make TAGS" build targets.
Document the directory layout