Merge pull request #4 from jgwashburn/retrofit

app/build.gradle

app/gradle.properties

app/src/main/AndroidManifest.xml

.../android/medtronic/service/MedtronicCnlIntentService.java

...nightscout/android/model/medtronicNg/PumpStatusEvent.java

...nfo/nightscout/android/model/medtronicNg/StatusEvent.java

...ightscout/android/upload/nightscout/NightScoutUpload.java

...o/nightscout/android/upload/nightscout/NightscoutApi.java

...roid/upload/nightscout/NightscoutUploadIntentService.java

...droid/upload/nightscout/serializer/EntriesSerializer.java

app/src/main/java/info/nightscout/api/BolusEndpoints.java

app/src/main/java/info/nightscout/api/DeviceEndpoints.java

app/src/main/java/info/nightscout/api/GlucoseEndpoints.java

app/src/main/java/info/nightscout/api/UploadApi.java

app/src/main/res/values/strings.xml

...scout/android/upload/nightscout/NightScoutUploadTest.java