move screenshots to the top

README.md

@@ -7,15 +7,28 @@ documents)
 
 Features:
 
-* Single lightweight backend service (C++ application) that can run on
- Raspberry PI (ver. 2)
+* Single lightweight backend service written in C++ using SQLite database.
 * Single page web interface. PDF files can be preview in the same browser window.
-* Documents metadata can be fetched using DOI, ArXiv or ISBN (Google Books)
+* Documents metadata can be fetched using DOI, ArXiv or ISBN (using Google Books)
  identifiers.
 * Documents can be categorized using user-defined tags.
 * Full-text search support. Documents contents is extracted with Apache Tika
   and indexed using SQLite FTS.
 
+# Screenshots
+
+Search page:
+
+[![img1](docs/img/img1.png)](docs/img/img1.png) 
+
+Edit page:
+
+[![img2](docs/img/img2.png)](docs/img/img2.png) 
+
+Mobile version:
+
+[![img3](docs/img/img3.gif)](docs/img/img3.gif) 
+
 # Deploying with Docker
 
 Build container:
@@ -172,17 +185,3 @@ server {
 }
 ```
 
-# Screenshots
-
-Search page:
-
-[![img1](docs/img/img1.png)](docs/img/img1.png) 
-
-Edit page:
-
-[![img2](docs/img/img2.png)](docs/img/img2.png) 
-
-Mobile version:
-
-[![img3](docs/img/img3.gif)](docs/img/img3.gif) 
-