blog: clean up blog to allow usage with gcloud command

+ The app.yaml file needs to be in the same directory as the
  entry-point Go files, so those are moved from ./blog to ./
+ Go files within the context article did not have the +build OMIT
  directive, so gcloud would view them as files that needed to be
  built at deploy time. Add the +build OMIT directive and use
  the context package instead of x/net/context.
+ Switch to using a service instead of version and update app.yaml
  to account for this.
+ Use 1.9 as the runtime.
+ Remove superfluous .gitignore

Change-Id: I7c886849b912bc7f5b67cd2791cb6986d93d5cc7
Reviewed-on: https://go-review.googlesource.com/114455
Reviewed-by: Russ Cox <rsc@golang.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/content/context/google/google.go b/content/context/google/google.go
index 740e6c5..75442d0 100644
--- a/content/context/google/google.go
+++ b/content/context/google/google.go
@@ -1,3 +1,5 @@
+// +build OMIT
+
 // Package google provides a function to do Google searches using the Google Web
 // Search API. See https://developers.google.com/web-search/docs/
 //
@@ -9,11 +11,11 @@
 package google
 
 import (
+	"context"
 	"encoding/json"
 	"net/http"
 
 	"golang.org/x/blog/content/context/userip"
-	"golang.org/x/net/context"
 )
 
 // Results is an ordered list of search results.