Merge pull request #19 from willprice/master

Merge pull request #18 from willprice/develop
Rename arch_rtl in template
Update templates
Merge branch 'develop' of github.com:willprice/vhdl-computer into develop
Update templates
Massive refactor of tbgen.py
Added 1bit full and half adders
 On branch feature/modules
 Changes to be committed:
	new file:   src/rtl/adder_full.vhd
	new file:   src/rtl/adder_half.vhd
Merge branch 'develop' into feature/modules
Added a 1 bit comparator with eq, lt and gt
 On branch feature/modules
	new file:   rtl/comparator_1bit.vhd
Added build/ and project/ entries for the git ignore file
Fix syntax error
Added the skeleton of a build script.

This script compiles all currently written modules and test benches
Output is places in build/work
Uses src/file_list.manifest to source all of its input files.
build order is worked out automatically.
 On branch develop
	new file:   src/file_list.manifest
	new file:   tools/runbuild.sh