【add】编码规范配置文件 review by liqian

Author: songyumeng

.editorconfig

@@ -0,0 +1,16 @@
+# editorconfig.org
+root = true
+
+[*]
+end_of_line = crlf
+trim_trailing_whitespace = true
+insert_final_newline = true
+charset = utf-8
+
+[*.{js,html,css}]
+indent_style = space
+indent_size = 4
+
+[*.{json}]
+indent_style = space
+indent_size = 2

.prettierignore

@@ -0,0 +1 @@
+package.json

.prettierrc

@@ -0,0 +1,8 @@
+{
+    "printWidth": 120,
+    "proseWrap": "never",
+    "tabWidth":4,
+    "semi":true,
+    "trailingComma":"none",
+    "bracketSpacing":true
+  }