Update badges

Author: Goooler

README.md

@@ -2,9 +2,9 @@
 
 [![Kotlin Alpha](https://kotl.in/badges/alpha.svg)](https://kotlinlang.org/docs/components-stability.html)
 [![JetBrains official project](https://jb.gg/badges/official.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub) 
-[![GitHub license](https://img.shields.io/badge/license-Apache%20License%202.0-blue.svg?style=flat)](http://www.apache.org/licenses/LICENSE-2.0) 
+[![GitHub license](https://img.shields.io/github/license/kotlin/kotlinx.collections.immutable)](LICENSE.txt) 
 [![Build status](https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:KotlinTools_KotlinxCollectionsImmutable_Build_All)/statusIcon.svg)](https://teamcity.jetbrains.com/viewType.html?buildTypeId=KotlinTools_KotlinxCollectionsImmutable_Build_All)
-[![Maven Central](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/kotlinx-collections-immutable.svg?label=Maven%20Central)](https://search.maven.org/search?q=g:%22org.jetbrains.kotlinx%22%20AND%20a:%22kotlinx-collections-immutable%22)
+[![Maven Central](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/kotlinx-collections-immutable.svg?label=Maven%20Central)](https://central.sonatype.com/artifact/org.jetbrains.kotlinx/kotlinx-collections-immutable)
 [![IR](https://img.shields.io/badge/Kotlin%2FJS-IR%20supported-yellow)](https://kotl.in/jsirsupported)
 
 Immutable collection interfaces and implementation prototypes for Kotlin.