Build failing in travis due to Ionic Cli 3.0

[ValterSantosMatos]

Hi there,

Ionic Cli v3.0 was released and it removed the command "state" that is used in the .travis file which causes the build to failed. I didn't had much time to make it work with the cli v3, as a quick fix I just force travis to install the Ionic cli 2.0 instead of the latest one.

From:
`before_install:

• nvm install node
• nvm use node
• npm install -g cordova ionic
• ionic state clear`

To:
`before_install:

• nvm install node
• nvm use node
• npm install -g cordova ionic@2.2.0
• ionic state clear`

Ty
Valter

[lathonez]

Thanks a lot for this - noticed it in another project but forgot to update here.

[lathonez]

b334fe5

[lathonez]

b334fe5