Added Go configurations.

.config/env/go.sh

@@ -2,6 +2,8 @@
 
 export GOPATH="$HOME/workspace/go"
 export GOROOT="/usr/lib/go-1.10/"
+export GOBIN="$GOPATH/bin"
+export PATH="$PATH:$GOBIN"
 
 if [ ! -f "$GOPATH/bin/gocode" ] && which gocode > /dev/null; then
     mkdir -p "$GOPATH/bin"