provide instructions for error "/usr/bin/fping is not suid root at /usr/bin/dvdrip-master line 221."

[Karl-Philipp Richter]

It'd be nice to get some instructions following the error message what to do because both `dvdrip-master` and `sudo dvdrip-master` fail.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: dvdrip 1:0.98.11-0ubuntu5
Uname: Linux 4.0.1-040001-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CurrentDesktop: Unity
Date: Sat May 23 20:42:46 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-04-02 (50 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: dvdrip
SystemImageInfo:
 current build number: 0
 device name:
 channel: daily
 last update: Unknown
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.