Added Java/Android implementation

.gitignore

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+*.class
+*.out

Java (Android compatible)/XOREncryption.java

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+public class XOREncryption {
+	
+	private static String encryptDecrypt(String input) {
+		char[] key = {'K', 'C', 'Q'}; //Can be any chars, and any length array
+		StringBuilder output = new StringBuilder();
+		
+		for(int i = 0; i < input.length(); i++) {
+			output.append((char) (input.charAt(i) ^ key[i % key.length]));
+		}
+ 		
+		return output.toString();
+	}
+	
+	public static void main(String[] args) {
+		String encrypted = XOREncryption.encryptDecrypt("kylewbanks.com");
+		System.out.println("Encrypted:" + encrypted);
+		
+		String decrypted = XOREncryption.encryptDecrypt(encrypted);
+		System.out.println("Decrypted:" + decrypted);
+	}
+}