Merge branch 'master' of git@github.com:abliss/urbit into gh-pages
Adds more information about build dependencies.
A more efficient mechanism for mod (modulus, a % b).  This version
seems to use about 50-80% as many steps as the old one, while
providing the same semantics and using no more words.
fix typo mod->moe in previous checkin
Remove and ignore .gdb_history

It did provide a fascinating but limited look into cgyarvin's mind, but...
markdown fail corrected
Merge branch 'master' of git://github.com/mbrubeck/urbit
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
Watt implementations for integer exponentiation and squareroot.
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
Merge branch 'master' of git://github.com/cgyarvin/urbit
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	.gdb_history
	Cato/k300.watt
git
Merge branch 'master' of git://github.com/cgyarvin/urbit

Conflicts:

	Cato/k300.watt