added secuinside to table of contents

Author: Pharisaeus

README.md

@@ -1,6 +1,8 @@
 # CTF writeups from P4 Team
 
-* [2016.06.94 **Backdoor CTF 2016** (1th place / 215 teams)](2016-06-04-backdoor-ctf)
+
+* [2016.07.09 **Secuinside CTF 2016** (17th place / 395 teams)](2016-07-09-secuinside-ctf)
+* [2016.06.04 **Backdoor CTF 2016** (1st place / 215 teams)](2016-06-04-backdoor-ctf)
 * [2016.05.01 **Google CTF 2016** (14th place / 911 teams)](2016-05-01-googlectf)
 * [2016.04.15 **Plaid CTF 2016** (14th place / 815 teams)](2016-04-15-plaid-ctf)
 * [2016.04.14 **Confidence Teaser CTF 2016** (10th place / 44 teams)](2016-04-14-confidence-teaser)