typo and grammar
add gpl license file
storeImg is now standalone function independent of
resizeImageAndApplyWaterMark function. Saving to the local storae now is
a full resolution image in jpeg with 100 quality level.
found the quality parameter of the camera library capture function
probbaly not effective. modified the resizeImageAndApplyWaterMark so it
now support an extra parameter to disable applying water mark but does
the compression anyway.

To save space, the local image is resized down to 1600x1200 with 95%
quality level.
Merge pull request #4 from paulshi/master

fixed typo, storeImg is now independent, saving to local storage a pic changed