add bountysource.com badge

 * Bountysource is the funding platform for open-source software. Users can improve the open-source projects they love by creating/collecting bounties and pledging to fundraisers.
 * https://github.com/bountysource/frontend/wiki/Frequently-Asked-Questions

diff --git a/README.md b/README.md
index d1aa03d4b6c564b5ed6c56c5620f24383d99a5d0..7f0b7d5f6fa3934ccbaf656a288611d9a9469210 100644 (file)
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ Shaarli, the personal, minimalist, super-fast, no-database delicious clone.
 You want to share the links you discover ? Shaarli is a minimalist delicious clone you can install on your own website.
 It is designed to be personal (single-user), fast and handy.
 
-[![Join the chat at https://gitter.im/shaarli/Shaarli](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/shaarli/Shaarli?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Join the chat at https://gitter.im/shaarli/Shaarli](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/shaarli/Shaarli) [![Bountysource](https://www.bountysource.com/badge/team?team_id=19583&style=bounties_received)](https://www.bountysource.com/teams/shaarli/issues)
 
 ## Features: