update shell rc load file

dfm tool now requires a shell agnostic filename
update to v0.7.2 of dfm
Merge pull request #14 from lrascao/feature/support_other_shells

update shell rc load file
adjust comments to reflect support of zsh too
Merge remote-tracking branch 'upstream/master'

Conflicts:
	.dfminstall
	CHANGELOG.md
	bin/dfm
	t/01.simple.t
	t/02.updates_mergeandinstall.t
	t/03.uninstall.t
	t/04.misc.t
	t/helper.pl
Merge branch 'master' into deverton

Conflicts:
	.dfminstall
	bin/dfm