* Translated html comment
Translated following " Your browser is lower then IE9" , "Your browser is IE9" , "Your browser is greater then IE9" to his "Si tu navegador es mas bajo de IE9" , "Si tu navegador es IE9", "Si tu navegador es mas major de IE9".
* Fix proposed translation for clearer text
* Update index.md
Translated this "Leave some space between the h1 and the p in order to understand what are we talking about." to this " Deja espacio entre <h1> y <p> para mejor entender el codigo."
* Fix proposed translation for clearer text
Translated this " FreeCodeCamp is an open-source project that needs your help" to this "FreeCodeCamp es un projecto de codigo abierto que neccesita tu ayuda"