Clarify spelling, shamelessly lifted from Mailman3

Also adjust formatting a bit, kill some trailing spaces.

README.md

 Icecast 2 - README
 ---------------------------------------------------------------------
 
-Icecast is a streaming media server which currently supports WebM and
-Ogg streaming including the Opus, Vorbis and Theora codecs. 
-Also Icecast can handle other streams like MP3/AAC/NSV 
+Icecast is a streaming media server which currently supports _WebM_ and
+_Ogg_ streaming including the _Opus_, _Vorbis_ and _Theora_ codecs.
+Also Icecast can handle other streams like MP3/AAC/NSV
 in legacy mode, but this is not officially supported.
 
 It can be used to create an Internet radio station or a privately
@@ -14,6 +14,8 @@ standards for communication and interaction.
 Icecast is distributed under the GNU GPL, version 2. A copy of this
 license is included with this software in the COPYING file.
 
+The name of this software is spelled __"Icecast"__ with a leading capital 'I' but with a lower case 'c'. Any other spelling is _incorrect_.
+
 Prerequisites
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 Icecast requires the following packages: