Update OS X Platform Guide Section Images (#968)

diff --git a/www/docs/en/9.x/guide/platforms/osx/index.md b/www/docs/en/9.x/guide/platforms/osx/index.md
index 11f18b0..15ceb99 100644
--- a/www/docs/en/9.x/guide/platforms/osx/index.md
+++ b/www/docs/en/9.x/guide/platforms/osx/index.md
@@ -96,7 +96,7 @@
 within Xcode. Double-click to open the `hello/platforms/osx/HelloWorld.xcodeproj`
 file. The screen should look like this:
 
-![]({{ site.baseurl }}/static/img/guide/platforms/osx/helloworld_project.png)
+![]({{ site.baseurl }}/static/img/guide/platforms/osx/xcode10-review-project.png)
 
 > **TIP**
 > You can also use the `open` command to open the XCode project directly
@@ -123,7 +123,7 @@
 2. In the __Derived Data__ section, press the __Advanced__ button and
    select __Unique__ as the __Build Location__ as shown here:
 
-   ![]({{ site.baseurl }}/static/img/guide/platforms/ios/xcode_build_location.png)
+   ![]({{ site.baseurl }}/static/img/guide/platforms/osx/xcode10-build-location.png)
 
 This is the default setting for a new Xcode install, but it may be set
 differently following an upgrade from an older version of Xcode.
diff --git a/www/docs/en/dev/guide/platforms/osx/index.md b/www/docs/en/dev/guide/platforms/osx/index.md
index 11f18b0..15ceb99 100644
--- a/www/docs/en/dev/guide/platforms/osx/index.md
+++ b/www/docs/en/dev/guide/platforms/osx/index.md
@@ -96,7 +96,7 @@
 within Xcode. Double-click to open the `hello/platforms/osx/HelloWorld.xcodeproj`
 file. The screen should look like this:
 
-![]({{ site.baseurl }}/static/img/guide/platforms/osx/helloworld_project.png)
+![]({{ site.baseurl }}/static/img/guide/platforms/osx/xcode10-review-project.png)
 
 > **TIP**
 > You can also use the `open` command to open the XCode project directly
@@ -123,7 +123,7 @@
 2. In the __Derived Data__ section, press the __Advanced__ button and
    select __Unique__ as the __Build Location__ as shown here:
 
-   ![]({{ site.baseurl }}/static/img/guide/platforms/ios/xcode_build_location.png)
+   ![]({{ site.baseurl }}/static/img/guide/platforms/osx/xcode10-build-location.png)
 
 This is the default setting for a new Xcode install, but it may be set
 differently following an upgrade from an older version of Xcode.
diff --git a/www/static/img/guide/platforms/osx/xcode10-build-location.png b/www/static/img/guide/platforms/osx/xcode10-build-location.png
new file mode 100644
index 0000000..317dd93
--- /dev/null
+++ b/www/static/img/guide/platforms/osx/xcode10-build-location.png
Binary files differ
diff --git a/www/static/img/guide/platforms/osx/xcode10-review-project.png b/www/static/img/guide/platforms/osx/xcode10-review-project.png
new file mode 100644
index 0000000..86ec62e
--- /dev/null
+++ b/www/static/img/guide/platforms/osx/xcode10-review-project.png
Binary files differ