Could not download sdk.aar (com.estimote:sdk:0.9.4)

I am creating a new android app with Estimote beacons, and as per the estimote guidelines, I tried including estimote library in following way,

dependencies {
compile fileTree(dir: ‘libs’, include: [’*.jar’])
testCompile 'junit:junit:4.12’
compile 'com.estimote:sdk:0.9.4@aar’
compile '’
compile '’
compile '’
compile ‘’

and android studio came up with following message,

Error:A problem occurred configuring project ‘:app’.

Could not download sdk.aar (com.estimote:sdk:0.9.4)
Could not get resource ‘’.
Could not GET ‘’.
peer not authenticated

I think there might be something wrong with your Internet connection. If you visit in your browser, does it start downloading the AAR file?