Replace rip command suggestions with whipper

I've only fixed the user facing occurrences: there are lots more in the source code.

Fixes #112

misc/morituri-uninstalled

@@ -27,7 +27,7 @@ PROJECT=`basename $self | sed s/-.*//g`
 VERSION=`basename $self | sed s/.*-//g`
 COMMAND=$PROJECT
 # override if the command line name to be completed is different
-COMMAND=rip
+COMMAND=whipper
 
 options=
 

morituri/command/cd.py

@@ -297,7 +297,7 @@ Log files will log the path to tracks relative to this directory.
 
         if self.options.offset is None:
             raise ValueError("Drive offset is unconfigured.\n"
-                             "Please install pycdio and run 'rip offset "
+                             "Please install pycdio and run 'whipper offset "
                              "find' to detect your drive's offset or set it "
                              "manually in the configuration file. It can "
                              "also be specified at runtime using the "

morituri/command/debug.py

@@ -251,7 +251,7 @@ class MusicBrainzNGS(BaseCommand):
     summary = "examine MusicBrainz NGS info"
     description = """Look up a MusicBrainz disc id and output information.
 
-You can get the MusicBrainz disc id with rip cd info.
+You can get the MusicBrainz disc id with whipper cd info.
 
 Example disc id: KnpGsLhvH.lPrNc1PBL21lb9Bg4-"""