Added OSX specific junk file to gitignore
Added OSX specific junk file to gitignore

kasemir/org.csstudio.display.builder,ESSICS/org.csstudio.display.builder,ESSICS/org.csstudio.display.builder,kasemir/org.csstudio.display.builder,ESSICS/org.csstudio.display.builder,kasemir/org.csstudio.display.builder,kasemir/org.csstudio.display.builder,kasemir/org.csstudio.display.builder,ESSICS/org.csstudio.display.builder,ESSICS/org.csstudio.display.builder