Add LauncherJarPlugin option to avoid long APP_CLASSPATH line. (#80)
Add LauncherJarPlugin option to avoid long APP_CLASSPATH line. (#80)

In Windows, when running server.bat the following error message is seen: The input line is too long.
The syntax of the command is incorrect.

This error occurs because Windows has limit of around 8000 chars in one line. bin/server.bat has more long line for APP_CLASSPATH. This PR avoids APP_CLASSPATH problem by add LauncherJarPlugin option to sbt PlayScala plugin.
gitpitch/gitpitch,gitpitch/gitpitch,gitpitch/gitpitch