docs: Add instructions on dependencies to install

README.md

@@ -25,6 +25,44 @@ If you run into problems while using Parity Fether, feel free to file an issue i
 
 ![Parity Fether](https://wiki.parity.io/images/fether-screenshot-0.jpg)
 
+## Install dependencies
+
+### MacOS
+
+Install Xcode Command Line Tools, NVM, Node.js latest LTS, Yarn, and Git
+
+```bash
+xcode-select --install;
+curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash;
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
+[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
+echo -e "Installing Node.js latest LTS version";
+nvm install --lts
+echo -e "Switching to use Node.js latest LTS version";
+nvm use --lts;
+brew install yarn --without-node;
+brew install git --verbose;
+brew upgrade git --verbose;
+```
+
+### Linux and Windows (Git Bash)
+
+Install Node.js 10.x, Yarn, Git, and increase amount of inotify watchers
+
+```bash
+sudo apt update;
+sudo apt install -y git nodejs npm curl;
+curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -;
+apt-get install -y nodejs;
+sudo ln -s /usr/bin/nodejs /usr/bin/node;
+curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -;
+echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list;
+sudo apt-get update && sudo apt-get install yarn;
+sudo ln -s /usr/bin/yarn /usr/local/bin/yarn;
+
+```
+
 ## Install and start Parity Fether
 
 ### Linux