Update the README

Author: ararslan

README.md

@@ -1,3 +1,17 @@
 # SpecialFunctions.jl
 
-Special mathematical functions in Julia.
+Special mathematical functions in Julia, including Bessel, Hankel, Airy, error, Dawson, eta, zeta,
+digamma, inverse digamma, trigamma, and polygamma functions.
+These functions were formerly part of Base.
+
+[![Travis](https://travis-ci.org/JuliaMath/SpecialFunctions.jl.svg?branch=master)](https://travis-ci.org/JuliaMath/SpecialFunctions.jl)
+[![AppVeyor](https://ci.appveyor.com/api/projects/status/ccfgkm2cjcggu158/branch/master?svg=true)](https://ci.appveyor.com/project/ararslan/specialfunctions-jl/branch/master)
+[![Coverage Status](https://coveralls.io/repos/github/JuliaMath/SpecialFunctions.jl/badge.svg?branch=master)](https://coveralls.io/github/JuliaMath/SpecialFunctions.jl?branch=master)
+
+Latest release:
+[![SpecialFunctions](http://pkg.julialang.org/badges/SpecialFunctions_0.5.svg)](http://pkg.julialang.org/?pkg=SpecialFunctions)
+[![SpecialFunctions](http://pkg.julialang.org/badges/SpecialFunctions_0.6.svg)](http://pkg.julialang.org/?pkg=SpecialFunctions)
+
+Documentation:
+[![](https://img.shields.io/badge/docs-stable-blue.svg)](https://JuliaMath.github.io/SpecialFunctions.jl/stable)
+[![](https://img.shields.io/badge/docs-latest-blue.svg)](https://JuliaMath.github.io/SpecialFunctions.jl/latest)