Update README with development instructions

- Markdown formattings
- Add Development instructions

Author: abhisekp

README.md

@@ -3,32 +3,59 @@ to put comments in your code and then have them annotated across your whole proj
 
 ### Installation:
 
-
-    npm install notes -g
+```sh
+$ npm install notes -g
+```
 
 ### Usage:
 
-    $ notes              # will search for notes in cwd
-    $ notes lib/ test/   # will search only in lib and test
+```sh
+$ notes              # will search for notes in cwd
+$ notes lib/ test/   # will search only in lib and test
+```
 
 ### What It Does:
 
 For example, if a file contained these lines somewhere in it:
 
-    code...
-    # NOTE: This line should get annoated by Notes.
-    # OPTIMIZE Make things faster!
-    
-    more code...
-    # TODO: Annotate your tasks.
-    
-    yet more code...
-    # FIXME: Keep up with things to fix.
+```text
+code...
+# NOTE: This line should get annoated by Notes.
+# OPTIMIZE Make things faster!
+
+more code...
+# TODO: Annotate your tasks.
+
+yet more code...
+# FIXME: Keep up with things to fix.
+```
 
 Those comments would be annotated as:
 
-    * /path/to/my/file
-    Line 8:    ✐ NOTE This line should get annoated by Notes.
-    Line 9:   ↘ OPTIMIZE Make things faster!
-    Line 10:   ✓ TODO Annotate your tasks.
-    Line 11:   ☂ FIXME Keep up with things to fix.
+```text
+* /path/to/my/file
+Line 8:    ✐ NOTE This line should get annoated by Notes.
+Line 9:   ↘ OPTIMIZE Make things faster!
+Line 10:   ✓ TODO Annotate your tasks.
+Line 11:   ☂ FIXME Keep up with things to fix.
+```
+
+### Development:
+
+#### Build Project
+
+```sh
+$ npm install               # install all dependencies
+
+$ npm run -s build          # build the project
+# OR
+$ npm i -g nodemon          # install nodemon globally
+$ npm run -s build:watch    # watch src/ dir for changes
+```
+
+#### Test the Project
+
+```sh
+$ npm link  # make globally available
+$ notes     # use the `notes` app
+```