add missing catalina_base directories: bin, lib and work

[kakawait]

Reference #14

According to Tomcat documentation http://tomcat.apache.org/tomcat-8.0-doc/RUNNING.txt section Advanced Configuration - Multiple Tomcat Instances

When running with a separate CATALINA_HOME and CATALINA_BASE, the files
and directories are split as following:

In CATALINA_BASE:

 * bin  - Only the following files:
           * setenv.sh (*nix) or setenv.bat (Windows),
           * tomcat-juli.jar
          The setenv scripts were described above. The tomcat-juli library
          is documented in the Logging chapter in the User Guide.
 * conf - Server configuration files (including server.xml)
 * lib  - Libraries and classes, as explained below
 * logs - Log and output files
 * webapps - Automatically loaded web applications
 * work - Temporary working directories for web applications
 * temp - Directory used by the JVM for temporary files (java.io.tmpdir)

In my personal case I really need to add setenv.sh and jarfile on lib folder. Actually I need to create both folders before importing those files.

[ghost]

This get's released once #16 is done/merged.