Enhancement: composer setup

Signed-off-by: Dan Scott <dan@coffeecode.net>
Add a useful description and author homepage

Signed-off-by: Dan Scott <dan@coffeecode.net>
Make composer.json actually work

We need to pull in PEAR/PEAR_Exception to make Composer happy.
So do that.

Signed-off-by: Dan Scott <dan@coffeecode.net>
Merge pull request #2 from pear/master

up to date