ENH: to_latex(): add posibility to define the latex environment (instead of table)
#### Is your feature request related to a problem?

I wish pandas's to_latex() function could create table* environment instead of table for wide tables. The generated table sometimes does not fit into one column of a two column document. 

#### Describe the solution you'd like

A parameter where one can define the name of the environment. E.g. `df.to_latex(env="foobar*")` to generate: `\begin{foobar*} table stuff here \end{foobar*}`.

#### API breaking implications

One more parameter.

#### Describe alternatives you've considered

Write a code, which replaces begin{table} and end{table} to the desired environment. (table* in most of the cases)
