Update README

* Remove reference to OpenCollective
* Remove reference to Gitter

Author: jakobnissen

README.md

@@ -6,17 +6,12 @@
 [![Stable documentation](https://img.shields.io/badge/docs-stable-blue.svg)](https://biojulia.github.io/FASTX.jl/stable)
 [![Latest documentation](https://img.shields.io/badge/docs-latest-blue.svg)](https://biojulia.github.io/FASTX.jl/latest/)
 [![Pkg Status](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
-[![Chat](https://img.shields.io/gitter/room/BioJulia/FASTX.svg)](https://gitter.im/BioJulia/FASTX.jl)
-
 
 ## Description
-
 FASTX provides I/O and utilities for manipulating FASTA and FASTQ, formatted
 sequence data files.
 
-
 ## Installation
-
 You can install FASTX from the julia REPL.
 Press `]` to enter pkg mode, and enter the following:
 
@@ -27,9 +22,7 @@ add FASTX
 If you are interested in the cutting edge of the development, please check out
 the master branch to try new features before release.
 
-
 ## Testing
-
 FASTX is tested against Julia `1.X` on Linux, OS X, and Windows.
 
 **Latest build status:**
@@ -38,37 +31,18 @@ FASTX is tested against Julia `1.X` on Linux, OS X, and Windows.
 [![Documentation](https://github.com/BioJulia/FASTX.jl/workflows/Documentation/badge.svg?branch=master)](https://github.com/BioJulia/FASTX.jl/actions?query=workflow%3ADocumentation+branch%3Amaster)
 [![](https://codecov.io/gh/BioJulia/FASTX.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/BioJulia/FASTX.jl)
 
-
 ## Contributing
-
 We appreciate contributions from users including reporting bugs, fixing
 issues, improving performance and adding new features.
 
 Take a look at the [contributing files](https://github.com/BioJulia/Contributing)
 detailed contributor and maintainer guidelines, and code of conduct.
 
-
-### Financial contributions
-
-We also welcome financial contributions in full transparency on our
-[open collective](https://opencollective.com/biojulia).
-Anyone can file an expense. If the expense makes sense for the development
-of the community, it will be "merged" in the ledger of our open collective by
-the core contributors and the person who filed the expense will be reimbursed.
-
-
 ## Backers & Sponsors
-
 Thank you to all our backers and sponsors!
 
-Love our work and community? [Become a backer](https://opencollective.com/biojulia#backer).
-
 [![backers](https://opencollective.com/biojulia/backers.svg?width=890)](https://opencollective.com/biojulia#backers)
 
-Does your company use BioJulia? Help keep BioJulia feature rich and healthy by
-[sponsoring the project](https://opencollective.com/biojulia#sponsor)
-Your logo will show up here with a link to your website.
-
 [![](https://opencollective.com/biojulia/sponsor/0/avatar.svg)](https://opencollective.com/biojulia/sponsor/0/website)
 [![](https://opencollective.com/biojulia/sponsor/1/avatar.svg)](https://opencollective.com/biojulia/sponsor/1/website)
 [![](https://opencollective.com/biojulia/sponsor/2/avatar.svg)](https://opencollective.com/biojulia/sponsor/2/website)
@@ -80,6 +54,5 @@ Your logo will show up here with a link to your website.
 [![](https://opencollective.com/biojulia/sponsor/8/avatar.svg)](https://opencollective.com/biojulia/sponsor/8/website)
 [![](https://opencollective.com/biojulia/sponsor/9/avatar.svg)](https://opencollective.com/biojulia/sponsor/9/website)
 
-
 ## Questions?
 If you have a question about contributing or using BioJulia software, come on over and chat to us on [the Julia Slack workspace](https://julialang.org/slack/), or you can try the [Bio category of the Julia discourse site](https://discourse.julialang.org/c/domain/bio).