Update README.md

Author: ChrisRackauckas

README.md

@@ -7,8 +7,15 @@
 
 SymbolicIntegration.jl solves indefinite integrals using one of the implemented algorithms: Risch method and Rule based method
 
+# Documentation
+
+For information on using the package,
+[see the stable documentation](https://docs.sciml.ai/SymbolicIntegration/stable/). Use the
+[in-development documentation](https://docs.sciml.ai/SymbolicIntegration/dev/) for the version of
+the documentation which contains the unreleased features.
 
 # Usage
+
 ```julia
 julia> using Pkg; Pkg.add("SymbolicIntegration") # installation
 
@@ -78,7 +85,7 @@ Nonelementary integrals | ❌ | most of them
 Special functions | ❌ | ❌
 more than one symbolic<br> variable in the expression  | ❌ | ✅
 
-More info about them in the [methods documentation](methods/overview.md)
+More info about them in the [methods documentation](https://docs.sciml.ai/SymbolicIntegration/dev/methods/overview/)
 
 ### Risch Method
 Complete symbolic integration using the Risch algorithm from Manuel Bronstein's "Symbolic Integration I: Transcendental Functions".
@@ -90,7 +97,7 @@ This method uses a large number of integration rules that specify how to integra
 # Documentation
 
 Complete documentation with method selection guidance, algorithm details, and examples is available at:
-**[https://symbolicintegration.juliasymbolics.org](https://symbolicintegration.juliasymbolics.org)**
+**[docs.sciml.ai/SymbolicIntegration](docs.sciml.ai/SymbolicIntegration/dev/)**
 
 
 # Citation