update editorConfig and remove single.html

Author: e-cloud

.editorconfig

@@ -5,6 +5,7 @@ root = true
 indent_style = space
 indent_size = 2
 charset = utf-8
+end_of_line = lf
 trim_trailing_whitespace = true
 insert_final_newline = true
 
@@ -14,4 +15,4 @@ curly_bracket_next_line = true
 indent_brace_style = Allman
 spaces_around_operators = true
 spaces_around_brackets = inside
-continuation_indent_size = 4
+continuation_indent_size = 2