Auto merge of #2863 - Turbo87:travis-badge, r=jtgeibel
Auto merge of #2863 - Turbo87:travis-badge, r=jtgeibel

README: Remove TravisCI badge

We use the bors bot to merge our code so the chance that this badge will ever not be green is veeery small and it doesn't give a lot of value to the readers so we should probably just get rid of it ;)

r? `@jtgeibel`

rust-lang/crates.io,rust-lang/crates.io,rust-lang/crates.io,rust-lang/crates.io