Merge pull request #3 from andriish/beginner_docs

Docs from the perspective of Julia beginner

README.md

@@ -2,12 +2,60 @@
 
 Fast QCD evolution and convolution.
 
-QCDNUM.jl is a Julia wrapper for Michiel Botje's [QCDNUM](https://www.nikhef.nl/~h24/qcdnum/), written in Fortran77. QCDNUM.jl is currently under development and more functionality and documentation will be added soon. 
+QCDNUM.jl is a Julia wrapper for Michiel Botje's [QCDNUM](https://www.nikhef.nl/~h24/qcdnum/), written in Fortran77. 
+QCDNUM.jl is currently under development and more functionality and documentation will be added soon. 
 
 ## Installation
 
-Install from GitHub in Julia's [Pkg REPL](https://docs.julialang.org/en/v1.6/stdlib/Pkg/):
+The QCDNUM package can be installed either from the github repository in a semi-automatic way or from the local derectory
 
+### Installation from github
+
+- Start Julia interpreter and the to open the Julia package management environment pressing ``]``.
+```
+julia> ]
+```
+
+ - Install from GitHub in Julia's [Pkg REPL](https://docs.julialang.org/en/v1.6/stdlib/Pkg/):
 ```
 pkg> add https://github.com/cescalara/QCDNUM.jl.git
 ```
+
+ - Exit the package manager using backspace or pressing `Ctrl+C`
+
+
+### Installation from local directory
+
+- Clone the github repository, e.g. 
+```
+git clone  https://github.com/cescalara/QCDNUM.jl.git
+```
+
+- Enter the directory and start Julia interpreter
+```
+cd QCDNUM.jl
+julia
+```
+
+-  Open the Julia package management environment pressing ``]``.
+
+```
+julia> ]
+```
+
+ - Execute 
+```
+(@v1.6) pkg> generate QCDNUM
+...... 
+(@v1.6) pkg>  . dev
+```
+ - Exit the package manager using backspace or pressing `Ctrl+C`
+
+
+In both cases the QCDNUM package will be available via `using QCDNUM`.
+To show the available functions, execute
+```
+names(QCDNUM, all=true)
+```
+in the Julia interpreter.
+