further cleanup of dev quickstart

remove invoke and less (were required by setup.py css)
removed explicit setup.py css|js (handled now by setup.py develop

README.md

@@ -2,17 +2,16 @@
 
 The Jupyter HTML notebook is a web-based notebook environment for interactive computing.
 
-
 Dev quickstart:
 
 * Create a virtual env (ie jupyter-dev)
+* ensure that you have node/npm install (ie brew install node on OS X)
 * Clone this repo and cd into it
 * pip install -r requirements.txt
 * pip install -e .
-* ensure that you have node/npm install (ie brew install node)
-* npm install -g 'less@<3.0'
-* python setup.py js
-* python setup.py css
+
+_NOTE_: For Debian/Ubuntu systems, if you're installing the system node you need
+to use the 'nodejs-legacy' package and not the 'node' package.
 
 Launch with:
 

requirements.txt

@@ -6,4 +6,3 @@
 -e git+https://github.com/ipython/ipython.git#egg=ipython
 -e git+https://github.com/ipython/ipython_kernel.git#egg=ipython_kernel
 -e git+https://github.com/jupyter/jupyter_nbconvert.git#egg=jupyter_nbconvert
-invoke