Update protocol to latest version

Author: kklisura

Makefile

@@ -65,4 +65,8 @@ verify:
 	cd $(JAVA_PROTOCOL_BUILDER_DIR)/ && make verify
 	cd $(JAVA_CLIENT_DIR)/ && make verify
 	$(MVN) --file "$(JAVA_CLIENT_DIR)/" clean install && \
-	  $(MVN) --file "$(EXAMPLES_DIR)/" clean compile
+	  $(MVN) --file "$(EXAMPLES_DIR)/" clean compile
+
+download-latest-protocol:
+	curl -o browser_protocol.json https://raw.githubusercontent.com/ChromeDevTools/devtools-protocol/master/json/browser_protocol.json
+	curl -o js_protocol.json https://raw.githubusercontent.com/ChromeDevTools/devtools-protocol/master/json/js_protocol.json

README.md

@@ -6,7 +6,9 @@ Chrome DevTools Java Client is a DevTools client - in Java. (: It can be used fo
 
 For more information on DevTools, see https://chromedevtools.github.io/devtools-protocol/.
 
-Tested on Google Chrome Version 67.0.3396.87. Protocol files from [dev-tools-protocol#1aa7b31ca7](https://github.com/ChromeDevTools/devtools-protocol/tree/1aa7b31ca7bba982eceea8d4bd494b27850fb0df/json)
+[v1.3.6](https://github.com/kklisura/chrome-devtools-java-client/tree/v1.3.6) tested on Google Chrome Version 67.0.3396.87. Protocol files from [dev-tools-protocol#1aa7b31ca7](https://github.com/ChromeDevTools/devtools-protocol/tree/1aa7b31ca7bba982eceea8d4bd494b27850fb0df/json)
+
+[vX.X.X](https://github.com/kklisura/chrome-devtools-java-client/tree/vX.X.X) tested on Google Chrome Version 76.0.3809.100. Protocol files from [dev-tools-protocol#e1fb93bd76](https://github.com/ChromeDevTools/devtools-protocol/tree/e1fb93bd76f99cdf401b949757c874c579e15434/json)
 
 [1] https://chromedevtools.github.io/devtools-protocol/.
 
@@ -97,6 +99,26 @@ For more examples, see [examples](cdt-examples/src/main/java/com/github/kklisura
 
 `make sonar-analysis`
 
+## Download latest protocol
+
+Run following:
+```
+make download-latest-protocol
+```
+
+This will download `browser_protocol.json` and `js_protocol.json` (protocol definitions) from https://github.com/ChromeDevTools/devtools-protocol repo.
+
+## Update protocol (generate Java files from protocol definitions)
+
+Make sure you have correct or latest protocol definitions. See [Download latest protocol](#download-latest-protocol) on how to update protocol definitions to latest version.
+
+Run following:
+```
+make update-protocol
+```
+
+This will build the tools for parsing and generating Java files, [cdt-protocol-builder](cdt-protocol-builder/) project. The input for this tool are protocol definitions files: `browser_protocol.json` and `js_protocol.json`. The generated Java files will be present in [cdt-java-client](cdt-java-client/) project. After building Java files, the [cdt-java-client](cdt-java-client/) will be compiled. If everything goes successfully, consider the protocol updated. :)
+
 ## License
 
 Chrome DevTools Java Client is licensed under the Apache License, Version 2.0. See [LICENSE](LICENSE.txt) for the full license text.