Remove travis status badge.
> The Interplanetary File System (IPFS), implemented in Rust
-[![standard-readme compliant](https://img.shields.io/badge/readme%20style-standard-brightgreen.svg?style=flat-square)](https://github.com/RichardLitt/standard-readme) [![Build Status](https://travis-ci.org/dvc94ch/rust-ipfs.svg?branch=master)](https://travis-ci.org/dvc94ch/rust-ipfs) [![Back on OpenCollective](https://img.shields.io/badge/open%20collective-donate-yellow.svg)](https://opencollective.com/ipfs-rust) [![Matrix](https://img.shields.io/badge/matrix-%23rust_ipfs%3Amatrix.org-blue.svg)](https://riot.im/app/#/room/#rust-ipfs:matrix.org) [![Discord](https://img.shields.io/discord/475789330380488707?color=blueviolet&label=discord)](https://discord.gg/9E5SFvW)
+[![standard-readme compliant](https://img.shields.io/badge/readme%20style-standard-brightgreen.svg?style=flat-square)](https://github.com/RichardLitt/standard-readme) [![Back on OpenCollective](https://img.shields.io/badge/open%20collective-donate-yellow.svg)](https://opencollective.com/ipfs-rust) [![Matrix](https://img.shields.io/badge/matrix-%23rust_ipfs%3Amatrix.org-blue.svg)](https://riot.im/app/#/room/#rust-ipfs:matrix.org) [![Discord](https://img.shields.io/discord/475789330380488707?color=blueviolet&label=discord)](https://discord.gg/9E5SFvW)
## Description
