src: added class method 'Random()' for Matrix and CMatrix
test: added 'Random()' testings
readme: updated 'Random()' api
Merge branch 'feature/class_method_Random_for_the_matrix' into develop
readme: added api concept list
readme: modified md url for testing
readme: updated apis
test: updated 'CMatrix.Random()' testing
readme: fixed some incorrect links
Merge branch 'feature/Readme' into develop