updated normalize-by-median documentation for loadtable; see #376
updated ChangeLog for normalize-by-median loadtable doc update
fix e-mail address in ChangeLog
fixed documentation in normalize-by-median to use :program: appropriately
Update partitioning-big-data.txt

Add in a note about the default parsing behaviour of load-graph.py when there is no recognised file extension.
Remove argparse from the requirements

unless it isn't available. Argparse is bundled with Python 2.7+.
This simplifies the installation instructions. Tested with cpython 2.6
& 2.7 on Ubuntu 13.10.
Merge pull request #401 from ged-lab/fix/argparse-nodep

Remove argparse from the requirements
Merge pull request #400 from ctSkennerton/patch-1

Update partitioning-big-data.txt
Merge branch 'master' of github.com:ged-lab/khmer into update/normalize-loadtable

Conflicts:
	ChangeLog
Merge branch 'update/normalize-loadtable' of github.com:ged-lab/khmer into update/normalize-loadtable

Conflicts:
	ChangeLog