improve readme.md

README.md

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+
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 **ZaraDB:**  A Lightweight and Fast Document Database
 
 ZaraDB is a lightweight, fast, open-licensed document database with no hidden restrictions.
 Its goal is to be a lightweight alternative to common documentary databases.
 It can also provide superior performance compared to Mongo in many common use cases.
 
-***Limitations***:
-Horizontal scale and achieving ACID are two things that do not go together, so Zara chooses to achieve ACID.
-It is a missing feature in documentary databases.
+**Limitations**:
+Horizontal scale is not one of Zara's goals currently.
 
 
-***Installation***
+**Installation**
 download zara pre-compiled from [here](https://github.com/baxiry/zaradb/releases), extract it, and run it as any program.
 
 Or compile it from soure:
@@ -19,7 +20,6 @@ go get github.com/baxiry/zaradb && cd zaradb && go build .
 ```
 
 
-
 ***API Documentation***:
 
 ## Note