Update kotlin version, return incremental compilation and update README

Author: ffgiraldez

README.md

@@ -49,6 +49,8 @@ allprojects {
     repositories {
         ...
         maven { url 'https://jitpack.io' }
+        maven { url 'https://kotlin.bintray.com/kotlinx' }
+        maven { url "http://dl.bintray.com/kotlin/kotlin-dev" }
     }
 }
 ```

build.gradle

@@ -24,16 +24,14 @@ buildscript {
         javaVersion = '1.7'
         katzVersion = '0.1-SNAPSHOT'
         kotlinTestVersion = '2.0.0'
-        kotlinVersion = '1.1.3-dev-1334'
+        kotlinVersion = '1.1.3-dev-1450'
         kotlinxCollectionsImmutableVersion = '0.1'
         kotlinxCoroutinesVersion = '0.14.1'
     }
 
     repositories {
         jcenter()
-        maven {
-            url  "http://dl.bintray.com/kotlin/kotlin-dev"
-        }
+        maven { url "http://dl.bintray.com/kotlin/kotlin-dev" }
     }
 
     dependencies {
@@ -46,9 +44,7 @@ allprojects {
     repositories {
         jcenter()
         maven { url 'https://kotlin.bintray.com/kotlinx' }
-        maven {
-            url  "http://dl.bintray.com/kotlin/kotlin-dev"
-        }
+        maven { url "http://dl.bintray.com/kotlin/kotlin-dev" }
     }
 
     apply plugin: 'kotlin'

gradle.properties

@@ -34,4 +34,4 @@ org.gradle.jvmargs=-Xmx2048m
 
 # Kotlin configuration
 kotlin.coroutines=enable
-kotlin.incremental=false
+kotlin.incremental=true