added variables-citruz.less & mixins-citruz.less files. Added hints in variables-citrz.less for easy customization.

added variables-citruz.less & mixins-citruz.less files. Added hints in
variables-citrz.less for easy customization.
THE FOLLOWING CUSTOMIZATIONS TIPS ARE ADDED TO THE variables.less:
//IMPORTANT TIP FOR CUSTOMIZATION: I have marked those variables with
//possibility of customization with the following markers:
// //###// - Citruz cutomization probability high
// //$$// - Citruz cutomization probability medium
// //@// - Citruz cutomization probability less
//      - Citruz cutomization probability very less if nothing is marked
//search for that using CRTL+F and change it...
//first search and change all the high probability variables,then do all
medium probability variables and
//then if you need go for low probability and other variables
//other variables only if you want you can change them - mostly you will
not do that I believe!!
//most of the hints to understand the variables here in this file are
copied from bootstrap customization page
//and will not be avilable in default variables.less file that comes
with bootstrap
//- so when changing this file please do with care.