add background information; optimize layout format

readme.md

@@ -1,27 +1,30 @@
-Taobao shop: [深圳市精创新科技](http://shop585136636.world.taobao.com/?spm=a312a.7700824.0.0.21af3ab6wcDDYg)
+**Background**  
 
-Link: [https://item.taobao.com/item.htm?spm=a1z09.2.0.0.66bc2e8dwKPAtD&id=631370129669&_u=p2evd2ohc9c7](https://item.taobao.com/item.htm?spm=a1z09.2.0.0.66bc2e8dwKPAtD&id=631370129669&_u=p2evd2ohc9c7)
+Syrostan project aims to test the quality and find out potential problems of the [sinara project hardwares](https://github.com/sinara-hw) manufactured by the factory. A lever is used to fix the cards and probe necessary test points through pogo pins. The document gives a guide on how to order these tailor-made levers for each card (taking DIO-SMA as an example) from Taobao.  
+<br/>  
+**Basic information**
 
-Need ~1 week for manufacturing
+* Taobao shop: [深圳市精创新科技](http://shop585136636.world.taobao.com/?spm=a312a.7700824.0.0.21af3ab6wcDDYg)  
+* Item link: [测试架PCB测试架工装PCB测试治具定做夹具模块FPC测试架测试夹具](https://item.taobao.com/item.htm?spm=a1z09.2.0.0.66bc2e8dwKPAtD&id=631370129669&_u=p2evd2ohc9c7)  
+* Need ~1 week for manufacturing  
+* Price mainly based on numbers of test points (need to confirm with the manufacturer, for the DIO-SMA case, they charged 400RMB for 60 test points)  
+* Ask them to ship to HK directly using SF-express (weight ~5kg, shipping fee 70~120HKD)  
+<br/>  
 
-Price mainly based on numbers of test points (need to confirm with the shop owner, for DIO case, they charged 400RMB for 60 test points)
+**Documents needed**
-
-Ask them to ship to HK directly using SF-express (weight ~5kg, shipping fee 70~120HKD)
-
-**Documents needed:**
 
 
 
 1. Altium Designer PCB project file (available on [https://github.com/sinara-hw](https://github.com/sinara-hw))
 
-![alt_text](images/image1.png "image_tooltip")
+    ![alt_text](images/image1.png "image_tooltip")
 
 
 2. Photos of the actual card with marks to specify where the test points are. 
 
-![alt_text](images/image2.jpg "image_tooltip")
+    ![alt_text](images/image2.jpg "image_tooltip")
 
-![alt_text](images/image3.jpg "image_tooltip")
+    ![alt_text](images/image3.jpg "image_tooltip")
 
 
 3. Specify the shapes of the test points if necessary (especially for special shapes), such as holes, pads, holes with solder, pins of components, etc. 
@@ -30,13 +33,16 @@ Ask them to ship to HK directly using SF-express (weight ~5kg, shipping fee 70~1
 
     Cad file could be exported from [https://git.m-labs.hk/sinara-hw/Syrostan-HW](https://git.m-labs.hk/sinara-hw/Syrostan-HW) 
 
-![alt_text](images/image4.png "image_tooltip")
+    ![alt_text](images/image4.png "image_tooltip")
 
-![alt_text](images/image5.jpg "image_tooltip")
+    ![alt_text](images/image5.jpg "image_tooltip")  
+<br/>  
 
 
       
-**Steps:**
+
+
+**Ordering steps**
 
 
 
@@ -44,12 +50,12 @@ Ask them to ship to HK directly using SF-express (weight ~5kg, shipping fee 70~1
 2. Pogo pins will occupy 15MM of inner space of the base box. A total height of 100MM should be enough to place the Syrostan board. 
 3. Can ask them to add necessary buttons on the panel, especially one for detecting the pressing. 
 
-![alt_text](images/image6.png "image_tooltip")
+    ![alt_text](images/image6.png "image_tooltip")
 
 
 4. Can ask for a dxf file of the holes on the acrylic they manufactured to import to KiCad for the extension PCB board. 
 
-![alt_text](images/image7.jpg "image_tooltip")
+    ![alt_text](images/image7.jpg "image_tooltip")
 
 
 5. Ask them to take a video preview before shipping to us. 
@@ -58,5 +64,5 @@ Ask them to ship to HK directly using SF-express (weight ~5kg, shipping fee 70~1
 
     [https://item.taobao.com/item.htm?spm=a230r.1.14.169.c34a7ce20iwqaE&id=623728174926&ns=1&abbucket=1#detail](https://item.taobao.com/item.htm?spm=a230r.1.14.169.c34a7ce20iwqaE&id=623728174926&ns=1&abbucket=1#detail) 
 
-![alt_text](images/image8.jpg "image_tooltip")
+    ![alt_text](images/image8.jpg "image_tooltip")