Merge pull request #78 from xushiwei/q

echo alias

Author: xushiwei

101-Hello-world/hello-1.gop 101-Hello-world/hello-11.gop101-Hello-world/hello-1.gop renamed to 101-Hello-world/hello-11.gop

@@ -0,0 +1,4 @@
+// To emphasize our preference for the command-line style, we introduce `echo` as an alias
+// for `println`:
+
+echo "Hello world"