update Edict links

The Edict dictionary moved to a new URI, probably a while ago.
Update the Edict and Enamdict readme files to reflect the new
location.
add test target to Seashell build script

Add a test target to Seashell. Rename all of the test files so that
they end in "Test" instead of beginning with it. This way, all
*Test files can be run (instead of needing to exclude internal classes
explicitly, i.e. classes with $ in their name).
add a README file to Seashell

I only know the most basic information about Seashell, so it will have
to suffice for now. Works toward #6.
Add README for ItadakiDataIpadic

This only has the most basic information for now. Works towards
add readme for OpenOffice

This only contains basic information and build information for now, as I know little about it. Works towards #6.