Corrected some indentation and add a new function

About the new function `quandlsearch`: it _searchs_ a query given by the user using the API and returns it (not quite implemented yet). 

As we now have 2 functions working, I propose we change the name of the other function from `quandl` to `quandlget` as it actually _gets_ the table the user wants, in contrast with the new function.