Add vimL file that is sources after each install, For plug-ins that need initialization after installation.

[granin]

vim-get should be able to source file with initialization of plug-ins on
each install/reinstall command.
Some plugins, like soywiki require initialization, e.g. here is a quote from https://github.com/danchoi/soywiki

You can start SoyWiki from within a running Vim session. To set this up, first install or update SoyWiki, and then run

soywiki --install-plugin

Please note that you will need to run this command after each time you update SoyWiki to a newer version

I'm trying to fix this with patch to soywiki that will restructure files so there is no need for anything to be execudted on each install here: danchoi/soywiki#15

Yet, in general it makes sense to allow plugin developers to source some commands once plugin is installed

[srushti]

You can now mention a post_install in the yaml file to run after installing a particular plugin. e.g.
soywiki:
git: git://github.com/danchoi/soywiki.git
post_install: soywiki --install-plugin

I haven't tested this extensively since the plugins I use don't really need anything to be run.

[granin]

thank you! I'll let you know if I test it thoroughly