[honu] add some examples

collects/tests/honu/flow.honu

@@ -0,0 +1,15 @@
+#lang honu
+
+foo(x){
+    x + 1
+}
+
+bar(x){
+    x * 2
+}
+
+buz(z){
+    z - 4
+}
+
+foo(5) | bar | buz

collects/tests/honu/struct.honu

@@ -1,12 +1,7 @@
 #lang honu
 
-/*
-require (forSyntax "struct-patterns.honu");
+// structure foo (bar) {a, b, c};
+structure foo {a, b, c};
 
-provide struct;
-macro struct () {
-  _ name {field:structField ...} ;
-} {
-  schemeSyntax#sx(honu-struct name (field_name_result ...))
-}
-*/
+var x = foo(1, 2, 3);
+printf("x.a: ~a\n", x.a);