codechef; add README with the codechef address
codechef; solve "Life, the Universe, and Everything"
codechef; solve "Enormous Input Test"
codechef; use mathjax to make problem statements prettier
codechef; use level 2 headers in problem statements instead of 3
codechef; solve "ATM"
codechef; use iostreams but with some tweeks

* `ios_base::sync_with_stdio(false);` to turn off the syncronization
of all the iostream standard streams with their corresponding standard
C streams

* `cin.tie(NULL);` to untied `cin` from `cout`; this way `cout` is not
getting flushed everytime we read from `cin`

* use `'\n'` instead of `endl` to prevent additional flushes
codechef; use c++11 initialization
codechef; solve "Factorial"
codechef; read input of the specified size instead of until EOF
codechef; maintain the same header sizes in problem statements
codechef; solve "Holes in the text"
codechef; use c++11's `nullptr`
codechef; solve "Small factorials"
codechef; solve "Turbo Sort"
codechef; solve "The Lead Game"
codechef; solve "Sums in a Triangle"
codechef; solve "Transform the Expression"