chore: release 1.0.0 (#95)

* updated CHANGELOG.md

* updated package.json

* updated samples/package.json

* switch to ga, which we're exporting now

* docs: regenerate README to reflect GA

Author: bcoe

scheduler/package.json

@@ -14,7 +14,7 @@
     "test": "mocha --timeout 10000 --exit"
   },
   "dependencies": {
-    "@google-cloud/scheduler": "^0.3.0",
+    "@google-cloud/scheduler": "^1.0.0",
     "body-parser": "^1.18.3",
     "express": "^4.16.4"
   },