Set JAVA_HOME
close the string

Fixes syntax error
Header files for Postgres

* If you're using `pg` and don't have postgres installed locally you'll need this package (contains header files)
Move check for $JAVA_HOME to it's own section

Only set it if the person has it locally in .env.xxxxx
Install PG client package

* So we can connect to remove postgresql servers
Merge pull request #13 from amaabca/set-java-home

Set JAVA_HOME and install Postgres header files