[docs] use: add manual compilation instructions

doc/use/manual_compilation.md

+
+# Compile Duniter manually from source code
+
+Title: Compile Duniter manually
+Order: 1
+Date: 2020-05-05
+Slug: manual_compilation
+Authors: elois
+
+## Prerequisites
+
+To compile Duniter manually, there is currently the following requirement:
+
+- A computer with GNU/Linux or Mac as operating system
+- Build essential tools
+- tar or unzip or git (to download and extract source code)
+- Nvm
+- Rust
+- Yarn
+
+### Get source code
+
+#### From archive tar.gz or zip
+
+Url to download source code of a specific Duniter version X.Y.Z:
+
+- tar.gz: https://git.duniter.org/nodes/typescript/duniter/repository/vX.Y.Z/archive.tar.gz
+- zip: https://git.duniter.org/nodes/typescript/duniter/repository/vX.Y.Z/archive.zip
+
+*Replace X.Y.Z with the version of Duniter you want to install.*
+
+Then extract the archive to the folder of your choice.
+
+#### With git
+
+Latest stable version:
+
+    git clone https://git.duniter.org/nodes/typescript/duniter -b stable --depth 1
+
+Specific version:
+
+    git clone https://git.duniter.org/nodes/typescript/duniter -b X.Y.Z --depth 1
+
+*Replace X.Y.Z with the version of Duniter you want to install.*
+
+### Install Prerequisites
+
+#### Build essential tools
+
+Build essential tools:
+
+Depend on your distribution:
+
+##### Debian/Ubuntu
+
+    apt-get install build-essential
+
+##### Fedora
+
+    yum groupinstall "Development Tools" "Development Libraries"
+
+TODO: If you know how to install build essential tools for other gnu/linux distributions or for mac, you can complete this documentation and submit a merge request.
+
+#### Nvm and Rust
+
+Nvm:
+
+    wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
+
+Rust:
+
+    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -- -y
+
+#### Yarn
+
+Yarn: [installation instructions][yarn]
+
+## Build the project
+
+Go to the root of the folder where you extracted the source code (or possibly cloned from git).
+
+### Install and use the correct version of nodejs
+
+Check the required node version in the `package.json` file on line 5.
+
+If, for example, version 10 is expected, install and select it with the following command:
+
+    nvm install 10 && nvm use 10
+
+### Compile
+
+**WARNING**: the compilation of the project requires a lot of resources on your machine, and several long minutes, don't do anything else at the same time!
+
+Command to compile :
+
+    NEON_BUILD_RELEASE=true yarn add duniter-ui
+
+### Set autocompletion
+
+To install or update Duniter's command auto-completion:
+
+    cp release/extra/completion/duniter_completion.bash /etc/bash_completion.d/
+
+### Run on command line
+
+    bin/duniter start
+
+### Run on gui
+
+    bin/duniter webstart
+
+then open `localhost:9220` on your browser.