Update README.md

Author: ChrisJStone

README.md

@@ -231,14 +231,3 @@ the command.
 The files should be placed in .git/hooks  
 In the directory hooks you can find examples of all the hooks available.
 
-## Showing your appreciation
-
-Of course, the best way to show your appreciation for the git-flow tool itself
-remains contributing to the community.  If you'd like to show your appreciation
-in another way, however, consider donating through PayPal:
-
-[![PayPal][2]][1]
-
-[1]: https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=S85FXJ9EBHAF2&lc=US&item_name=gitflow&item_number=gitflow&no_note=0&cn=Add%20special%20instructions%20to%20the%20seller&no_shipping=1&rm=1&return=https%3a%2f%2fgithub%2ecom%2fpetervanderdoes%2fgitflow&cancel_return=https%3a%2f%2fgithub%2ecom%2fpetervanderdoes%2fgitflow&currency_code=USD&bn=PP%2dDonationsBF%3abtn_donate_SM%2egif%3aNonHosted
-
-[2]: https://www.paypalobjects.com/en_US/i/btn/btn_donate_SM.gif