Add description of dependency on Boost to readme and extend list of todos.
Add description of dependency on Boost to readme and extend list of todos.

openastro/d2d,agrawalabhishek/d2d,ennehekma/d2d,kartikkumar/d2d,ennehekma/d2d,openastro/d2d,kartikkumar/d2d,agrawalabhishek/d2d,openastro/d2d,agrawalabhishek/d2d,ennehekma/d2d,kartikkumar/d2d