Update getting started documentation to use bazelisk
Fixes
@@ -27,17 +27,13 @@ since J2CL closely follows Bazel Java idioms.
Let's get started with cloning the repository and build a sample app from
source:
-
-- Install Bazel 2.2.0:
+- Install [Bazelisk](https://github.com/bazelbuild/bazelisk):
```shell
- $ npm install -g @bazel/bazel@2.2.0
+ $ npm install -g @bazel/bazelisk
+ $ alias bazel=bazelisk
```
-(See [Install Bazel](https://bazel.build/versions/master/docs/install.html) for
-different platforms.)
-
-
- Clone this repository:
```shell
