Docs: add features page, edit README.

README.md

@@ -3,20 +3,21 @@
 ---
 
 ### pgSCV
-- primarily developed for needs of [Weaponry](https://weaponry.io).
-- [collects](./doc/collectors.md) a lot of stats about system, PostgreSQL, Pgbouncers, etc
+- [collects](./doc/collectors.md) a lot of stats about system, PostgreSQL, Pgbouncers, etc.
 - provides all metrics through well-known /metrics endpoint in [Prometheus metrics exposition format](https://prometheus.io/docs/concepts/data_model/).
-- could be configured
+- could be configured:
     1. in standalone listening-only mode for serving requests from Prometheus.
-    2. in combined listening-and-sending mode for sending collected metrics to Weaponry SaaS.
-- can run on Linux only, but [can connect](doc/usage-en.md) to remote services running on other OS. 
+    2. in combined listening-and-sending mode for sending collected metrics to [Weaponry](https://weaponry.io) SaaS.
+- can run on Linux only, but [can connect](doc/usage-en.md) to remote services running on other OS.
+- include features developed for needs of [Weaponry](https://weaponry.io) users, but might be useless for non-Weaponry users.
+- for further info see full list of features.
 
 ### Support
 If you need help using pgSCV feel free to open discussion or create an [issue](https://github.com/weaponry/pgscv/issues)
 
 ### Development and contribution
 To help development you are encouraged to:
-- provide suggestion/feedback/issue
+- provide [suggestion/feedback](https://github.com/weaponry/pgscv/discussions) or [issue](https://github.com/weaponry/pgscv/issues)
 - pull requests for new features
 - star the project
 

doc/features.md

@@ -0,0 +1,31 @@
+## Features
+
+List of available features. List of available collectors available [here](./collectors.md)
+
+---
+
+- Collecting metrics:
+  - System stats
+  - PostgreSQL stats, logs
+  - Pgbouncer stats
+
+
+- Selective disabling of specific collectors. Users might disable specific collectors if some metrics are not needed.
+
+
+- Expose metrics in [Prometheus metrics exposition format](https://prometheus.io/docs/concepts/data_model/). Metrics are
+  available through standard HTTP `/metrics` endpoint.
+
+
+- Services auto-discovery. pgSCV can discover services running on the same host where pgSCV is running and automatically 
+  start collecting metrics.
+  - PostgreSQL services
+  - Pgbouncer services
+
+
+- Remote service connecting. pgSCV can connect to remote services using user-provided requisites.
+
+
+- Auto-update. pgSCV can track Github Releases page for new releases and automatically update itself. Mainly this feature
+  exists for [Weaponry](https://weaponry.io) users for automatic pgSCV updates and allow delivering new Weaponry features
+  quickly.