Have made changes to the help strings. Minor refactoring of code.
Have made changes to the help strings. Minor refactoring of code.

ramdesh/vesuvius_installer,ramdesh/vesuvius_installer,bobrock/vesuvius,sahana/vesuvius,bobrock/vesuvius,sahana/vesuvius,bobrock/vesuvius,bobrock/vesuvius,bobrock/vesuvius,ramdesh/vesuvius_installer,sahana/vesuvius,sahana/vesuvius,bobrock/vesuvius,ramdesh/vesuvius_installer,sahana/vesuvius