Merge pull request #84 from codeisneverodd/week-20-codeisneverodd

[20주차] 풀이 추가, README 개정

Author: codeisneverodd

.prettierrc.json

@@ -0,0 +1,7 @@
+{
+  "singleQuote": true,
+  "bracketSpacing": true,
+  "bracketSameLine": true,
+  "arrowParens": "avoid",
+  "printWidth": 120
+}