Exclude required typings.d.ts file from gitignore of Angular CLI sample

Author: eitanp461

samples/angular-cli-sample/.gitignore

@@ -1,5 +1,8 @@
 # See http://help.github.com/ignore-files/ for more about ignoring files.
 
+# Exclude custom typings
+!src/typings.d.ts
+
 # compiled output
 /dist
 /tmp

samples/angular-cli-sample/src/typings.d.ts

@@ -0,0 +1 @@
+declare module 'cloudinary-core';