Fixed bug, renamed installer
Fixed a bug where if you did not have preferences set the window would not open.  This bug was caused by me trying to set a window size request with a variable that only existed if preferences were set.
I renamed `installer.sh` to `install.sh` because it is less typing, and if this were in Windows one could just type `install` to install.  I just prefer `install.sh` over `installer.sh`.