add .editorconfig file

.coafile

@@ -9,6 +9,7 @@ indent_cli_options = -bad -bap -bbo -nbc -br -brs -brf -c33 -cd33 -cdb -ce -ci4
 [C]
 bears = CPPLintBear,ClangASTPrintBear,ClangBear,ClangCloneDetectionBear,ClangFunctionDifferenceBear
 files = **/*.(c|h|cpp)
+cpplint_ignore = whitespace/tab
 
 [JavaScript]
 bears = JSHintBear

.editorconfig

@@ -0,0 +1,21 @@
+# Top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# Indent With Tabs
+indent_style = tab
+indent_size = tab
+tab_width = 4
+
+# UTF-8
+charset = utf-8
+
+max_line_length = 99
+continuation_indent_size = 8
+indent_brace_style = 1TBS
+curly_bracket_next_line = false