update README

Author: ChrisRackauckas

README.md

@@ -1,7 +1,10 @@
-# DiffEqProblemLibrary
+# DiffEqProblemLibrary.jl
 
-[![Build Status](https://travis-ci.org/ChrisRackauckas/DiffEqProblemLibrary.jl.svg?branch=master)](https://travis-ci.org/ChrisRackauckas/DiffEqProblemLibrary.jl)
+[![Join the chat at https://gitter.im/JuliaDiffEq/Lobby](https://badges.gitter.im/JuliaDiffEq/Lobby.svg)](https://gitter.im/JuliaDiffEq/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Build Status](https://travis-ci.org/JuliaDiffEq/DiffEqProblemLibrary.jl.svg?branch=master)](https://travis-ci.org/JuliaDiffEq/DiffEqProblemLibrary.jl)
 
-[![Coverage Status](https://coveralls.io/repos/ChrisRackauckas/DiffEqProblemLibrary.jl/badge.svg?branch=master&service=github)](https://coveralls.io/github/ChrisRackauckas/DiffEqProblemLibrary.jl?branch=master)
-
-[![codecov.io](http://codecov.io/github/ChrisRackauckas/DiffEqProblemLibrary.jl/coverage.svg?branch=master)](http://codecov.io/github/ChrisRackauckas/DiffEqProblemLibrary.jl?branch=master)
+DiffEqProblemLibrary.jl is a component package in the DifferentialEquations ecosystem. It premade
+problems for the differential equations solvers. These can either be used as tests
+or as examples to show how to use the the solvers. Check out the problems in the
+src directory. Users interested in using this
+functionality should check out [DifferentialEquations.jl](https://github.com/JuliaDiffEq/DifferentialEquations.jl).