package.json angularfire version

[numerized]

after download the repo and npm install users will hit this error:

angularfire2@2.0.0-beta.4 requires a peer of @angular/common@^2.0.0-rc.5 but none was installed.
npm WARN angularfire2@2.0.0-beta.4 requires a peer of @angular/compiler@^2.0.0-rc.5 but none was installed.
npm WARN angularfire2@2.0.0-beta.4 requires a peer of @angular/core@^2.0.0-rc.5 but none was installed.
npm WARN angularfire2@2.0.0-beta.4 requires a peer of @angular/platform-browser@^2.0.0-rc.5 but none was installed.
npm WARN angularfire2@2.0.0-beta.4 requires a peer of @angular/platform-browser-dynamic@^2.0.0-rc.5 but none was installed.

You can fix it by specifying a version for angularfire2 in the package.json file :

"angularfire2": "2.0.0-beta.2",