Merge branch 'installation-instructions' of...

Merge branch 'installation-instructions' of ssh://gitlab.iscpif.fr:20022/gargantext/purescript-gargantext into dev

README.md

@@ -19,8 +19,12 @@ you need the backend (haskell-gargantext) installation too.
 
 ### Installation steps
 
-1. Add nodes_modules/.bin to your path
-2. Execute ./build
+1. Add `.node_modules/.bin` to your path
+2. Execute `./build`
+
+In one command:
+
+```PATH="$PWD/.node_modules/.bin:$PATH" ./build```
 
 ## Note to the contributors