update fuel to 2.1.0 (#5)

* fix travis

Signed-off-by: a.derendyaev <[email protected]>

Author: alexxxdev

.travis.yml

@@ -1,3 +1,4 @@
+dist: trusty
 language: java
 jdk:
   - oraclejdk8

README.md

@@ -11,7 +11,7 @@
 [![Hits-of-Code](https://hitsofcode.com/github/alexxxdev/fuel-comfy)](https://hitsofcode.com/view/github/alexxxdev/fuel-comfy)
 
 [![Kotlin](https://img.shields.io/badge/Kotlin-1.3.31-blue.svg)](https://kotlinlang.org)
-[![Fuel](https://img.shields.io/badge/Fuel-2.0.1-blue.svg)](https://github.com/kittinunf/fuel)
+[![Fuel](https://img.shields.io/badge/Fuel-2.1.0-blue.svg)](https://github.com/kittinunf/fuel)
 
 More comfortable use of [Fuel](https://github.com/kittinunf/fuel) as in [Retrofit](https://square.github.io/retrofit/) or [Feign](https://github.com/OpenFeign/feign) for Kotlin/Android
 

build.gradle

@@ -6,7 +6,7 @@ buildscript {
     ext.detektGradlePluginVersion = '1.0.0-RC14'
     ext.gradleVersionsPlugin = '0.20.0'
     ext.kotlinpoetVersion = '1.2.0'
-    ext.fuelVersion = '2.0.1'
+    ext.fuelVersion = '2.1.0'
     ext.spekVersion = '2.0.2'
     ext.okio = '2.2.2'
     ext.mockwebserver = '3.14.1'