Update README.md

README.md

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-markdown-cheatsheet
+Markdown Cheatsheet
 ===================
 
-Markdown Cheatsheet for Github Readme.md
+- - - - 
+
+# Heading 1 #
+
+    Markup :  # Heading 1 #
+
+## Heading 2 ##
+
+    Markup :  ## Heading 2 ##
+
+### Heading 3 ###
+
+    Markup :  ### Heading 3 ###
+
+#### Heading 4 ####
+
+    Markup :  #### Heading 4 ####
+
+
+Common text
+
+    Markup :  Common text
+
+_Emphasized text_
+
+    Markup :  _Emphasized text_ or *Emphasized text*
+
+__Strong text__
+
+    Markup :  __Strong text__ or **Strong text**
+
+___Strong emphasized text___
+
+    Markup :  ___Strong emphasized text___ or ***Strong emphasized text***