Update Choose File doc to mention support for grid (#1318)
Update Choose File doc to mention support for grid (#1318)

* Update Choose File doc to mention support for grid

The Selenium will, magically, transfer the file from the file system where Robot Framework is running to the Selenium Grid node file system. Selenium will ensure that file is transferred to know location, like %TMP% or $TMP and file system does not have to same (Example transfer from Windows to Linux works fine.) 

Fixes #449


emanlove/robotframework-selenium2library,robotframework/SeleniumLibrary,robotframework/SeleniumLibrary,rtomac/robotframework-selenium2library,robotframework/SeleniumLibrary,rtomac/robotframework-selenium2library,emanlove/robotframework-selenium2library,emanlove/robotframework-selenium2library,rtomac/robotframework-selenium2library