reorder chapters

README.md

@@ -11,9 +11,9 @@
 - [Ch 4     - Vim Grammar](./ch4_vim_grammar.md)
 - [Ch 5    -  Moving in a File](./ch5_moving_in_file.md)
 - [Ch 6     - Insert Mode](./ch6_insert_mode.md)
-- [Ch 7     - Registers](./ch7_registers.md)
-- Ch 8     - Macros
-- Ch 9     - Dot command
+- Ch 7     - Dot command
+- [Ch 8     - Registers](./ch8_registers.md)
+- Ch 9     - Macros
 - Ch 10    - Command Line Mode
 - Ch 11    - Search and Substitute
 - Ch 12    - Undo

ch6_insert_mode.md

@@ -148,5 +148,3 @@ Ctrl-o D      Delete from current location to the end of the line
 If you are like me and you come from another text editor, it can be tempting to stay in insert mode. However, staying in insert mode when you're not entering a text is an anti-pattern. Develop a habit to go to normal mode when your fingers aren't typing new texts.
 
 When you need to insert a text, first ask yourself if that text already exists. If it does, try to yank or move that text instead of typing it. Should you have to enter insert mode, see if you can autocomplete that text as much as possible. Avoid typing the same word more than once if you can.
-
-Earlier I mentioned about Vim registers. Let's talk about them in the next chapter.