chore: bump version to v1.15.0-post (#4347)

docs/api.md

@@ -1,11 +1,14 @@
-# Puppeteer API <!-- GEN:version -->v1.15.0<!-- GEN:stop-->
 
-<!-- GEN:empty-if-release --><!-- GEN:stop -->
+# Puppeteer API <!-- GEN:version -->Tip-Of-Tree<!-- GEN:stop-->
+<!-- GEN:empty-if-release -->
+#### Next Release: `May 23, 2019`
+<!-- GEN:stop -->
+
 - Interactive Documentation: https://pptr.dev
 - API Translations: [中文|Chinese](https://zhaoqize.github.io/puppeteer-api-zh_CN/#/)
 - Troubleshooting: [troubleshooting.md](https://github.com/GoogleChrome/puppeteer/blob/master/docs/troubleshooting.md)
 - Releases per Chromium Version:
-  * Chromium 75.0.3738.0 - [Puppeteer v1.14.0](https://github.com/GoogleChrome/puppeteer/blob/v1.14.0/docs/api.md)
+  * Chromium 75.0.3765.0 - [Puppeteer v1.15.0](https://github.com/GoogleChrome/puppeteer/blob/v1.15.0/docs/api.md)
   * Chromium 74.0.3723.0 - [Puppeteer v1.13.0](https://github.com/GoogleChrome/puppeteer/blob/v1.13.0/docs/api.md)
   * Chromium 73.0.3679.0 - [Puppeteer v1.12.2](https://github.com/GoogleChrome/puppeteer/blob/v1.12.2/docs/api.md)
   * Chromium 72.0.3582.0 - [Puppeteer v1.11.0](https://github.com/GoogleChrome/puppeteer/blob/v1.11.0/docs/api.md)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "puppeteer",
-  "version": "1.15.0",
+  "version": "1.15.0-post",
   "description": "A high-level API to control headless Chrome over the DevTools Protocol",
   "main": "index.js",
   "repository": "github:GoogleChrome/puppeteer",