Before the weekend starts off (with beautiful weather in Berlin), here are some links for you:
Four Pricing Principles To Never Forget
The Intercom team has some great advice on pricing for online businesses, where the biggest problem usually is to find the right price.
Continuous Integration for Erlang with Travis CI
Ward Bekker whipped up a great introduction on testing Erlang on Travis CI.
Using Scheme with Travis CI
Erik Holk gives us the low-down on testing Scheme (a Lisp dialect) on Travis CI.