Adapt installation guide

README.md

@@ -8,11 +8,16 @@
 
 ## Install
 
-To install this package in Julia:
+To install this package in Julia, clone it from github and then run the following command in the Julia REPL from the package directory:
 ```
-using Pkg; Pkg.add("PBWDeformations")
+using Pkg
+Pkg.activate(".")
+include(joinpath(pwd(), "etc", "add_oscar.jl"))
+using PBWDeformations, Oscar
 ```
 
+This package depends on a development version of the [Oscar](https://oscar.computeralgebra.de/) package. The `add_oscar.jl` script will add the Oscar package to the current environment. If you want to use the package in a different environment, you can run the `add_oscar.jl` script int the other environment to obtain the specific version of Oscar.
+
 ## Functionality
 
 The package will provide both a general framework and specialized functions in order to

docs/src/index.md

@@ -17,11 +17,16 @@ To solve classification problems efficiently, we use representation theoretic id
 - For some modules of ``\mathfrak{so}_n``, give an explicit basis using arc diagrams or pseudographs (cf. [FM22](@cite)).
 
 ## Installation
-As this package heavily relies on [Oscar](https://oscar.computeralgebra.de/), it is recommended to install Oscar first ([installation instructions](https://oscar.computeralgebra.de/install/)). Then, install this package via the Julia package manager:
+o install this package in Julia, clone it from github and then run the following command in the Julia REPL from the package directory:
 ```
-] add PBWDeformations
+using Pkg
+Pkg.activate(".")
+include(joinpath(pwd(), "etc", "add_oscar.jl"))
+using PBWDeformations, Oscar
 ```
 
+This package depends on a development version of the [Oscar](https://oscar.computeralgebra.de/) package. The `add_oscar.jl` script will add the Oscar package to the current environment. If you want to use the package in a different environment, you can run the `add_oscar.jl` script int the other environment to obtain the specific version of Oscar.
+
 ## Outline
 ```@contents
 Pages = [