fixed login function of amivcore :o

lib/amiv/amivcore.js

@@ -12,7 +12,7 @@
             // Important vars n' stuff
             lib: {
                 //api_url: 'https://amiv-apidev.vsos.ethz.ch',
-                api_url: 'https://amiv-apidev.vsos.ethz.ch',
+                api_url: 'http://192.168.1.100',
                 spec_url: 'lib/amiv/spec.json',
                 //spec_url: 'https://nicco.io/amiv/docs/spec.json',
                 authenticated: false,
@@ -237,7 +237,7 @@
                 path: '/sessions/',
                 method: 'POST',
                 data: JSON.stringify({
-                    user: curUser.toLowerCase(),
+                    username: curUser.toLowerCase(),
                     password: curPass
                 }),
                 headers: {