Added .onLoad with the is.windows function checking if the package is currently used on a Windows OS.

(it's a small thing, but I wanted to see how to make it work)

Also added NAMESPACE.
Added dcoumentation to all the functions in install.r

Also moved the .onLoad function to zzz.r
Version 0.5

Updated NEWS and DESCRIPTION.
(Also fixed a problem with COLLATE)
New functions:
* get.installed.R.folders - Returns folder names with R installations
* copy.packages.between.libraries - Copies all packages from one library folder to another

Updated functions:
* update.R  - major update!!!
* ask.user.for.a.row - new "questions_text" parameter

More documentation for functions.
Made sure to have "do not run" wherever needed.