Merge pull request #314 from hemalchevli/master

Fixed readme.md headings

Author: rogerclarkmelbourne

README.md

@@ -1,22 +1,22 @@
 Arduino STM32  
 =============  
 
-##Notice
+## Notice
 
 This software is experimental and a work in progress.
 Under no circumstances should these files be used in relation to any critical system(s).
 Use of these files is at your own risk.
 
 
-##Summary:  
+## Summary:  
 This repo contains, the "Hardware" files to support STM32 based boards on Arduino version 1.6.13 or 1.6.12 (some older versions may also work)  including [LeafLabs Maple, and Maple mini](http://www.leaflabs.com/about-maple/), and other generic STM32F103 boards  
 
 ***PRIMARY SUPPORT FORUM: http://www.stm32duino.com/***
 
 ***We are also on Gitter https://gitter.im/stm32duino/Lobby/***
 [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/stm32duino/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-##Background & Support:  
+## Background & Support:  
 * Based on https://github.com/bobc/maple-asp, which is in turn based on LibMaple by Leaflabs  
 * **Please read the wiki (https://github.com/rogerclarkmelbourne/Arduino_STM32/wiki) for full details**
 * See also my blog: http://www.rogerclark.net/stm32f103-and-maple-maple-mini-with-arduino-1-5-x-ide/  
@@ -29,11 +29,11 @@ This repo contains, the "Hardware" files to support STM32 based boards on Arduin
 * 20150413: [STM32 for Arduino 1.6.2 or newer (update)](https://www.youtube.com/watch?v=TePglhSkghg)
 * 20150419: [Uploading via USB to Serial to STM32F103 boards](https://www.youtube.com/watch?v=G_RF0a0hrak)
 
-##Additional Links & Info:  
+## Additional Links & Info:  
 * https://www.hackster.io/rayburne/4-dollar-90-mips-32-bit-72-mhz-arm-arduino  
 
-##Purchase info:  
-###Entry level boards
+## Purchase info:  
+### Entry level boards
 
 * [Ebay search for "arduino maple"](http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&LH_BIN=1&_nkw=arduino+maple&_sop=15) (currently costs <$5 with shipping)
 * [AliExpress search for "leaflabs maple"] (http://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20150607085526&SearchText=leaflabs+maple)