R: changes name convention on objective elements

README.md

@@ -1,11 +1,28 @@
 # Bulletin Board System (Client Side)
 This is my sandbox project. I made it test and develop my programming skills. Maybe one day it become a mature and production-ready project.
 
-![File upload](src/contents/img/zbss-client-cli_1.png)
+![File upload](contents/img/zbss-client-cli_1.png)
 
 ## Setup
 1. Create necessary file structure by running `$ ./setup.sh`.
 It will create all necessary file structure in order to run the program correctly. 
 
 2. Build the binary running `$ make` or `$ make bbs-client`
-3. Run it by `$ make run`
+3. Run it by `$ make run`
+
+## Develop
+
+### Name conventions:
+
+For objective elements like UI, there is a following name convention:
+
+
+`b_element_action`, where:
+* `b` stands for which block does the function belongs to;
+* `element` - the element name;
+* `action` - an action performed with the element;
+
+There are 3 type of blocks available yet:
+* `w`: widget
+* `m`: modal
+* `u`: utility