Removed old, unused Makefile
Fixed name of script which caused an import error in default install

	deleted:    Makefile
	modified:   README.txt
	modified:   ginga/doc/INSTALL.txt
	renamed:    examples/example1_gtk.py -> scripts/example1_gtk.py
	renamed:    examples/example1_qt.py -> scripts/example1_qt.py
	renamed:    examples/example2_gtk.py -> scripts/example2_gtk.py
	renamed:    examples/example2_qt.py -> scripts/example2_qt.py
	renamed:    ginga.py -> scripts/ginga
	modified:   setup.py

- ginga.py becomes scripts/ginga
  - should fix import error with ginga package prefix
- removed useless old Makefile
- slight updates of README and INSTALL instructions
Merge remote-tracking branch 'origin/master'
Fixed some bugs relating to the generation of thumbnails

	modified:   README.txt
	modified:   ginga/Control.py
	modified:   ginga/FitsImage.py
	modified:   ginga/doc/INSTALL-Linux.txt
	modified:   ginga/doc/INSTALL.txt
	modified:   ginga/gtkw/FitsImageGtk.py
	modified:   ginga/gtkw/plugins/Thumbs.py
	modified:   ginga/misc/Settings.py
	modified:   ginga/qtw/FitsImageQt.py
	modified:   ginga/qtw/plugins/Thumbs.py

- fixed a bug where not all thumbnails would be generated if multiple
    files were dropped on the window
- disabled automatic strolling to the bottom of the thumbs pane when new
    thumbs are added
- suppressed an error where a divide-by-zero error is generated on a blank
    image
- updated documentation slightly to reflect new distutils-based installation
Fixed setup.py script to include license file

	modified:   setup.py
More fixes to setup.py

	modified:   setup.py

- to allow uploading of source package to pypi
Enabled Python 3 compatibility, and changed tabs to spaces to prevent errors.
Fix importing of Queue module
Bug fixes for running under Python 3.

	modified:   ginga/PythonImage.py
	modified:   ginga/gtkw/plugins/Thumbs.py
	modified:   ginga/misc/Bunch.py
	modified:   ginga/qtw/plugins/Thumbs.py
	modified:   scripts/example2_qt.py
Merge branch 'master' of github.com:ejeschke/ginga