docs: Add how to use the generated db

Author: rafaeldelboni

README.md

@@ -32,6 +32,26 @@ DB->>CI: Bulk-transact all datoms
 CI->>RE: Zip and Publish
 ```
 
+# Using
+Go to this github [release page](https://github.com/clj-codes/docs.extractor/releases), download and unzip the `docs-db.zip` file.
+
+## Connecting
+Since `v.0.2.0`, because of the new full-text index analyzers, this database requires this minimal connection opts to be used:
+```clojure
+(require '[datalevin.core :as d]
+         '[datalevin.search-utils :as su])
+
+(def conn-opts
+  (let [query-analyzer (su/create-analyzer
+                        {:tokenizer (su/create-regexp-tokenizer #"[\s:/\.;,!=?\"'()\[\]{}|<>&@#^*\\~`\-]+")
+                         :token-filters [su/lower-case-token-filter]})]
+    {:search-domains {"project-name" {:query-analyzer query-analyzer}
+                      "namespace-name" {:query-analyzer query-analyzer}
+                      "definition-name" {:query-analyzer query-analyzer}}}))
+
+(d/get-conn "path/to/db" nil conn-opts)
+```
+
 ## Tools used
 - [tools.deps](https://github.com/clojure/tools.deps) Download projects/libraries
 - [clj-kondo](https://github.com/clj-kondo/clj-kondo) Parses/Analyses projects data