Update README.md

README.md

-# searx
+# SEARC Crawler
 
-[searx](https://en.wikipedia.org/wiki/Searx) is a privacy-respecting, hackable metasearch engine.
+## Base website
+https://searx.me/
+## Based on
 
-## Main function to get main results through metadata
 
-getMetadataWith "artificial intelligence" (Just 10)
+## Usage
+### Entry function
+The basic entry point of this crawler is the function `SEARX.` `getMetadataWith`.
+
+This function take a `Text` representing the query you want to run on searx
+and a `Int` representing the maximum number of pages you want to get.
+### Return Type
+The return type is pretty simple, it's **either** a `ClientError` or a `ISTEX.` `Client.Documents`.
+
+`Documents` represent a collection of `ISTEX.` `Client.Document` and the number of `Document` returned.
+
+`Document` is a simple type that contain nearly every informations we need (id,title,abstract,publicationDate,sources).
+
+**authors** is not present since it's not contained in the searx database.
+### Exemple
+Here is a basic main using the entry point of the crawler and printing the 5 first results.
+```hs
+{-# LANGUAGE OverloadedStrings #-}
+
+module Main where
+
+import SEARX
+
+main :: IO ()
+main = do
+  res <- getMetadataWith "ia" 300
+  case res of
+    (Left err) -> print err
+    (Right r) -> print $ take 5 r
+
+```
+