Corrected conversion of Char Array to String

My sketches were randomly crashing and would reset during my writeRead() call; I traced it to this line, and this change fixed the problem.
Merged:  DrewJaworskiRIS:patch-1
Merge branch 'DrewJaworskiRIS-patch-1'
Update Version String and Readme for v2.3.0 Release
v2.3.1: Always stop() client before connect().