Delete Image

Delete:
Image001.jpg
Image002.jpg
Image003.jpg
Re-upload the Image Files

Upload:
image001.jpg
image002.jpg
image003.jpg
Finished about_couse.rst & correct get_started.rst

Upload:
image019~image039
about_course.rst

Modify:
index.rst
get_started.rst
Merge pull request #17 from JoeyChiou/master

FInished about_course.rst & correct get_started.rst