.gitignore: Add "ReadMe.html".  Add comments.
.gitignore: Add "ReadMe.html".  Add comments.

TimeDoctorLLC/dropbox-sdk-php,demisang/dropbox-sdk-php,dropbox/dropbox-sdk-php,sayfulit/dropbox-sdk-php,dropbox/dropbox-sdk-php,itsazzad/dropbox-sdk-php,itsazzad/dropbox-sdk-php,TimeDoctorLLC/dropbox-sdk-php,sayfulit/dropbox-sdk-php,demisang/dropbox-sdk-php