Fix missing javadoc warnings

Fix missing javadoc warnings.
Summon the warnings by gradle javadoc:
> Task :red-and-blue:javadoc
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\annotation\BlueInstance.java:10: warning: no comment
public @interface BlueInstance {
        ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\annotation\PrefabBlue.java:10: warning: no comment
public @interface PrefabBlue {
        ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\annotation\PrefabRed.java:10: warning: no comment
public @interface PrefabRed {
        ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\RedAndBlue.java:3: warning: no comment
final public class RedAndBlue<T> {
             ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\RedAndBlue.java:8: warning: no comment
    public RedAndBlue(Class<T> clazz, T red, T blue) {
           ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\RedAndBlue.java:22: warning: no comment
    public T blue() {
             ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\RedAndBlue.java:14: warning: no comment
    public Class<T> clazz() {
                    ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\RedAndBlue.java:18: warning: no comment
    public T red() {
             ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\RedAndBlueExtension.java:22: warning: no comment
public class RedAndBlueExtension implements TestInstancePostProcessor,
       ^
C:\Users\admin\Desktop\CONTRIB\red-and-blue\red-and-blue\src\main\java\com\github\neboskreb\red\and\blue\annotation\RedInstance.java:10: warning: no comment
public @interface RedInstance {
        ^
10 warnings
neboskreb / red-and-blue

Fix missing javadoc warnings #67
