Update HOWTO with wxWidgets build examples
Update HOWTO with wxWidgets build examples

It lacked build examples for linux, also suggest using wxWidgets-3.0.3
also add information about wxWidgets-3.1

ferd/otp,dumbbell/otp,dumbbell/otp,kvakvs/otp,electricimp/otp,getong/otp,ferd/otp,legoscia/otp,aboroska/otp,g-andrade/otp,legoscia/otp,isvilen/otp,RaimoNiskanen/otp,electricimp/otp,mikpe/otp,emacsmirror/erlang,saleyn/otp,RoadRunnr/otp,g-andrade/otp,vinoski/otp,getong/otp,lrascao/otp,bsmr-erlang/otp,dumbbell/otp,rlipscombe/otp,bjorng/otp,rlipscombe/otp,jj1bdx/otp,ferd/otp,mikpe/otp,RoadRunnr/otp,ferd/otp,uabboli/otp,g-andrade/otp,RaimoNiskanen/otp,dumbbell/otp,isvilen/otp,rlipscombe/otp,vinoski/otp,emacsmirror/erlang,uabboli/otp,saleyn/otp,dumbbell/otp,g-andrade/otp,vladdu/otp,bsmr-erlang/otp,saleyn/otp,isvilen/otp,saleyn/otp,bjorng/otp,g-andrade/otp,RoadRunnr/otp,lrascao/otp,g-andrade/otp,aboroska/otp,erlang/otp,rlipscombe/otp,dumbbell/otp,saleyn/otp,erlang/otp,bjorng/otp,ferd/otp,electricimp/otp,electricimp/otp,uabboli/otp,erlang/otp,emacsmirror/erlang,ferd/otp,jj1bdx/otp,dgud/otp,emacsmirror/erlang,vinoski/otp,mikpe/otp,legoscia/otp,getong/otp,dgud/otp,bsmr-erlang/otp,rlipscombe/otp,fenollp/otp,dgud/otp,vinoski/otp,legoscia/otp,emacsmirror/erlang,bjorng/otp,bjorng/otp,saleyn/otp,electricimp/otp,cobusc/otp,lrascao/otp,fenollp/otp,bsmr-erlang/otp,erlang/otp,RaimoNiskanen/otp,kvakvs/otp,dgud/otp,jj1bdx/otp,vinoski/otp,bsmr-erlang/otp,uabboli/otp,fenollp/otp,emacsmirror/erlang,emacsmirror/erlang,bjorng/otp,cobusc/otp,emacsmirror/erlang,erlang/otp,getong/otp,lrascao/otp,aboroska/otp,mikpe/otp,uabboli/otp,isvilen/otp,vinoski/otp,saleyn/otp,RoadRunnr/otp,jj1bdx/otp,vinoski/otp,cobusc/otp,tuncer/otp,mikpe/otp,getong/otp,tuncer/otp,vladdu/otp,uabboli/otp,bsmr-erlang/otp,vladdu/otp,g-andrade/otp,saleyn/otp,g-andrade/otp,RaimoNiskanen/otp,fenollp/otp,rlipscombe/otp,potatosalad/otp,vladdu/otp,isvilen/otp,legoscia/otp,kvakvs/otp,emacsmirror/erlang,potatosalad/otp,jj1bdx/otp,rlipscombe/otp,cobusc/otp,emacsmirror/erlang,erlang/otp,rlipscombe/otp,tuncer/otp,bsmr-erlang/otp,potatosalad/otp,kvakvs/otp,vinoski/otp,electricimp/otp,rlipscombe/otp,vladdu/otp,tuncer/otp,aboroska/otp,RaimoNiskanen/otp,fenollp/otp,potatosalad/otp,kvakvs/otp,mikpe/otp,erlang/otp,jj1bdx/otp,ferd/otp,legoscia/otp,getong/otp,kvakvs/otp,kvakvs/otp,kvakvs/otp,mikpe/otp,uabboli/otp,dgud/otp,isvilen/otp,dumbbell/otp,RoadRunnr/otp,mikpe/otp,vladdu/otp,tuncer/otp,lrascao/otp,aboroska/otp,vladdu/otp,fenollp/otp,ferd/otp,erlang/otp,cobusc/otp,getong/otp,dumbbell/otp,dgud/otp,bjorng/otp,dumbbell/otp,lrascao/otp,dgud/otp,legoscia/otp,cobusc/otp,jj1bdx/otp,uabboli/otp,lrascao/otp,bsmr-erlang/otp,getong/otp,RaimoNiskanen/otp,cobusc/otp,electricimp/otp,potatosalad/otp,vladdu/otp,RoadRunnr/otp,potatosalad/otp,cobusc/otp,RoadRunnr/otp,aboroska/otp,potatosalad/otp,bsmr-erlang/otp,legoscia/otp,getong/otp,isvilen/otp,bjorng/otp,erlang/otp,mikpe/otp,dgud/otp,tuncer/otp,dumbbell/otp,tuncer/otp,RaimoNiskanen/otp,rlipscombe/otp,bjorng/otp,fenollp/otp,lrascao/otp,dgud/otp,tuncer/otp,RaimoNiskanen/otp,tuncer/otp,RoadRunnr/otp,dgud/otp,potatosalad/otp,aboroska/otp,ferd/otp,jj1bdx/otp,isvilen/otp,uabboli/otp,fenollp/otp,RaimoNiskanen/otp,jj1bdx/otp,potatosalad/otp,lrascao/otp,legoscia/otp,electricimp/otp,vinoski/otp,isvilen/otp,g-andrade/otp,saleyn/otp,erlang/otp,kvakvs/otp,fenollp/otp,vladdu/otp,bjorng/otp,RoadRunnr/otp,potatosalad/otp,aboroska/otp,aboroska/otp,vinoski/otp,jj1bdx/otp,mikpe/otp,electricimp/otp,getong/otp,isvilen/otp,g-andrade/otp