post idea: microphysics.js 
                                
                                
                                    
                                        
                                        
                                    
                                    
                                    
- one post: tutorial on the library
- one post: boost performance with webworker
- link to sethladd
- link to doc and to its demo
 
                                                                    
                                    
                                        
demo ?
- gravity or not
- nbodygravity ( get it from git. Plugin struct)
- various sphere size
- nb spheres
- with/without webworker
- currently webworkers threex isnt implemented
 
- nb sphere to spawn
- one controlled by keyboard
- change color if in contact
- what about the contact of those spheres
- inside a box?
- inner box too ?
 
implementation
- reload the page at every change of options?
 
                                                                    
                                    
                                        
post structure?
- part of "lets make a 3D game" ? independant ?
- one only on microphysics.js
- another on THREEx helpers