use explicit UTF-8 when creating input reader

m_inReader created in initReceiver doesn't get correct encoding (please note the difference with connect method). 

Please find the user problem description here:
http://stackoverflow.com/questions/16081657/character-encoding-in-idea-output-of-assertionerror
It is shown when user starts IntelliJ IDEA without explicit encoding and uses non-"UTF-8" messages.
Thanks