Ieprotectedmode - Check if Windows OS

Add jna-platform to pom.xml so you don't get java.lang.NoClassDefFoundError: com/sun/jna/platform/win32/WinReg error when trying to hit ie_protected_mode endpoint on a Windows computer.

Add check to see if computer's OS is Windows before execute().

Remove lonely ";" on lines 109 and 145 of IEProtectedMode.java.