How to make faster so that i can build an app even more faster?

and this my libraries for my app

```
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.squareup.picasso:picasso:2.4.0'
compile 'com.android.support:design:23.3.0'
compile 'me.dm7.barcodescanner:zxing:1.8.4'
//compile 'com.github.nisrulz:qreader:1.0.6'
compile 'com.google.android.gms:play-services:9.0.2'
compile 'com.matthew-tamlin:sliding-intro-screen:3.0.1'
compile 'com.google.code.gson:gson:2.2.4'
compile 'com.android.volley:volley:1.0.0'

```