Fix problem with account selector

When sending a message, the account selector was ignoring
the account set by the before-edit hook.  Fix this
by running the hook before setting up the account selector.
Allow user to permanantly skip syncback

Sup will warn you each time it starts if maildir syncback was not
performed and ask if you really want to continue. If you just started
using sup, this can be annoying, since calling the syncback script is an
unnecessary hassle.

This adds a second question to turn off the startup nag.
Merge branch 'sup-heliotrope/develop' into maildir-sync
update deps in README.txt from gemspec
Merge branch 'sup-heliotrope/develop' into maildir-sync
Cleanup README and stick with markdown
Make License section respect linebreaks
Merge pull request #44 from 5long/rework-readme

Cleanup README and stick with markdown
Load gemspec if necessary

RVM installs rubygems-bundler by default, which would load gemspec
from Gemfile. But it's not the case ofr rbenv / system ruby users.
release 0.13.0
update homepage in gemspec
Include test files in subdirs of test/ too
Use Minitest, which is awesome
`rake test` by default
sup-config should expand ~ in path
Make axe() a little bit DRY.

This was part of a quick stab on leveraging HighLine's auto-completion
capability, which is not quite usable for now.
Merge pull request #50 from 5long/expand-tilde-in-source-url

Expand tilde in source url
Fix #52: Fix search-for-next function when using Ruby 1.9

The use of the 'n' key to search for the next occurrence
of a string stopped working when running sup in Ruby 1.9.
This simple patch fixes that problem.

Signed-off-by: Gaute Hope <eg@gaute.vetsj.com>
Merge branch 'develop' into sup-for-two

Conflicts:
	sup.gemspec
Merge branch 'maildir-sync' into sup-for-two