playground: replace - with _ to make srdjan happy

Change-Id: I222bc1461956ddba15145fac10f63da46efd57e8
diff --git a/README.md b/README.md
index 3bcf818..a8ae6a3 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@
 
 Test your image (without running compilerd):
 
-    $ sudo docker run -i playground < /usr/local/google/home/sadovsky/dev/veyron-www/content/playgrounds/code/fortune/ex0-go/bundle.json
+    $ sudo docker run -i playground < /usr/local/google/home/sadovsky/dev/veyron-www/content/playgrounds/code/fortune/ex0_go/bundle.json
 
 ## Running the playground server (compilerd)
 
diff --git a/client/bundles/fortune.md b/client/bundles/fortune.md
index 1b13cd1..c319cd4 100644
--- a/client/bundles/fortune.md
+++ b/client/bundles/fortune.md
@@ -71,8 +71,8 @@
 
 ### Code
 
-<div class="lang-go playground" data-srcdir="/fortune/ex0-go"></div>
+<div class="lang-go playground" data-srcdir="/fortune/ex0_go"></div>
 
 <!--
-<div class="lang-js playground" data-srcdir="/fortune/ex0-js"></div>
+<div class="lang-js playground" data-srcdir="/fortune/ex0_js"></div>
 -->
diff --git a/client/bundles/fortune/ex0-go/src/client/client.go b/client/bundles/fortune/ex0_go/src/client/client.go
similarity index 100%
rename from client/bundles/fortune/ex0-go/src/client/client.go
rename to client/bundles/fortune/ex0_go/src/client/client.go
diff --git a/client/bundles/fortune/ex0-go/src/fortune/fortune.vdl b/client/bundles/fortune/ex0_go/src/fortune/fortune.vdl
similarity index 100%
rename from client/bundles/fortune/ex0-go/src/fortune/fortune.vdl
rename to client/bundles/fortune/ex0_go/src/fortune/fortune.vdl
diff --git a/client/bundles/fortune/ex0-go/src/fortune/fortune.vdl.go b/client/bundles/fortune/ex0_go/src/fortune/fortune.vdl.go
similarity index 98%
rename from client/bundles/fortune/ex0-go/src/fortune/fortune.vdl.go
rename to client/bundles/fortune/ex0_go/src/fortune/fortune.vdl.go
index 4243c2e..e7e2009 100644
--- a/client/bundles/fortune/ex0-go/src/fortune/fortune.vdl.go
+++ b/client/bundles/fortune/ex0_go/src/fortune/fortune.vdl.go
@@ -137,7 +137,7 @@
 // descFortune hides the desc to keep godoc clean.
 var descFortune = __ipc.InterfaceDesc{
 	Name:    "Fortune",
-	PkgPath: "v.io/playground/client/bundles/fortune/ex0-go/src/fortune",
+	PkgPath: "v.io/playground/client/bundles/fortune/ex0_go/src/fortune",
 	Methods: []__ipc.MethodDesc{
 		{
 			Name: "Get",
diff --git a/client/bundles/fortune/ex0-go/src/server/server.go b/client/bundles/fortune/ex0_go/src/server/server.go
similarity index 100%
rename from client/bundles/fortune/ex0-go/src/server/server.go
rename to client/bundles/fortune/ex0_go/src/server/server.go
diff --git a/client/bundles/fortune/ex0-js/client.js b/client/bundles/fortune/ex0_js/client.js
similarity index 100%
rename from client/bundles/fortune/ex0-js/client.js
rename to client/bundles/fortune/ex0_js/client.js
diff --git a/client/bundles/fortune/ex0-js/server.js b/client/bundles/fortune/ex0_js/server.js
similarity index 100%
rename from client/bundles/fortune/ex0-js/server.js
rename to client/bundles/fortune/ex0_js/server.js
diff --git a/client/src/static/index.html b/client/src/static/index.html
index 85192ea..3128005 100644
--- a/client/src/static/index.html
+++ b/client/src/static/index.html
@@ -1,16 +1,16 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <title>Playground</title>
-  <link rel="stylesheet" href="/stylesheets/playground.css">
-  <script src="/playground.js" async></script>
-</head>
-<body class="default-layout">
-  <main>
-    <h1>Hello, go playground!</h1>
-    <div class="lang-go playground" data-srcdir="/fortune/ex0-go"></div>
-    <h1>Hello, js playground!</h1>
-    <div class="lang-js playground" data-srcdir="/fortune/ex0-js"></div>
-  </main>
-</body>
+  <head>
+    <title>Playground</title>
+    <link rel="stylesheet" href="/stylesheets/playground.css">
+    <script src="/playground.js" async></script>
+  </head>
+  <body class="default-layout">
+    <main>
+      <h1>Hello, go playground!</h1>
+      <div class="lang-go playground" data-srcdir="/fortune/ex0_go"></div>
+      <h1>Hello, js playground!</h1>
+      <div class="lang-js playground" data-srcdir="/fortune/ex0_js"></div>
+    </main>
+  </body>
 </html>
diff --git a/client/test.sh b/client/test.sh
index 4c2caa5..17a90b9 100755
--- a/client/test.sh
+++ b/client/test.sh
@@ -3,7 +3,7 @@
 # Tests that all embedded playgrounds execute successfully.
 
 # To debug playground compile errors you can build examples locally, e.g.:
-# $ cd bundles/fortune/ex0-go/src
+# $ cd bundles/fortune/ex0_go/src
 # $ GOPATH=$(dirname $(pwd)) VDLPATH=$(dirname $(pwd)) v23 go install ./...
 
 # v.io/core/shell/lib/shell_test.sh sourced via v.io/playground/lib/pg_test_util.sh