read me description with screenshots

README.md

@@ -1,2 +1,12 @@
-# cda-app
+# cda-app         <img src="https://raw.githubusercontent.com/braulio94/cda-app/master/app/src/main/res/drawable/cda_logo.png" width="30" height="30"></a>
 A App CDA terá como principal objetivo demostrar habilidades e competências individuais e coletivas dos membros do CDA para potencial empregadores, contratadores de freelancers e a sociedade em geral.
+
+## Screenshots
+
+#### Initial pages SplashActivity, LoginActivity
+
+<img src="https://raw.githubusercontent.com/braulio94/cda-app/master/screenshots/screenshot-1513588534878.jpg" width="240" height="400">    <img src="https://raw.githubusercontent.com/braulio94/cda-app/master/screenshots/screenshot-1513588556665.jpg" width="240" height="400">        <img src="https://raw.githubusercontent.com/braulio94/cda-app/master/screenshots/screenshot-1513588562137.jpg" width="240" height="400">
+
+#### Inside app pages MainActivity Navigation Drawer, MembersFragment and SettingsActivity
+
+<img src="https://raw.githubusercontent.com/braulio94/cda-app/master/screenshots/screenshot-1513588587766.jpg" width="240" height="400">    <img src="https://raw.githubusercontent.com/braulio94/cda-app/master/screenshots/screenshot-1513588605213.jpg" width="240" height="400">        <img src="https://raw.githubusercontent.com/braulio94/cda-app/master/screenshots/screenshot-1513588673561.jpg" width="240" height="400">