docs : update README.md (week2)

Author: spring0913

README.md

@@ -11,4 +11,12 @@
 | [병든 나이트](https://www.acmicpc.net/problem/1783) |  [BOJ1783.java](https://github.com/java-algorithm/bom/commit/1ae266e55c04692099e7a16f7d15cb10fab1df3b)  |
 | [뒤집기2](https://www.acmicpc.net/problem/1455)  |  [BOJ1455.java](https://github.com/java-algorithm/bom/commit/88c8fff8dfc909582df1facb8a78739ebcdaa659)  |
 
-
+## 2주차 구현
+| 문제                                                 | 풀이                                                                                                     |
+|----------------------------------------------------|--------------------------------------------------------------------------------------------------------|
+| [스위치 켜고 끄기](https://www.acmicpc.net/problem/1244)  | [BOJ1244.java](https://github.com/java-algorithm/bom/commit/2dacce46df4ef17a2ec2ba8e889cc5a631f77c33)  |
+| [빙고](https://www.acmicpc.net/problem/2578)         | [BOJ2578.java](https://github.com/java-algorithm/bom/commit/29ce10ac56bf223d304af649bc78f476cb460a38)  |
+| [오목](https://www.acmicpc.net/problem/2615)         | [BOJ2615.java](https://github.com/java-algorithm/bom/commit/39911d275bf8dd5bcb4d83306d4caaecb54aa5d2)  |
+| [요세푸스 문제 0](https://www.acmicpc.net/problem/11866) | [BOJ11866.java](https://github.com/java-algorithm/bom/commit/e1f5552b1db29c4c8c6e3172c8d2aa6e616b4320) |
+| [트럭](https://www.acmicpc.net/problem/13335)        | [BOJ13335.java](https://github.com/java-algorithm/bom/commit/1b6db9953e841d1f262ae2bd753ee77d1d818012) |
+| [마인크래프트](https://www.acmicpc.net/problem/18111)    | [BOJ18111.java](https://github.com/java-algorithm/bom/commit/511de0c38cd73787c4e02780bad8668b24afd7b1) |