[docs] more docs

Author: fuyu0425

README.org

@@ -2,7 +2,7 @@
 #+AUTHOR: yufu
 
 * Why KeePass
-- I don't want to pay for password managers anymore. Especially most of them are subscription-based.
+- I don't want to pay for password managers anymore. Especially most of them are subscription-based. I argue that having a password manager is basic human right in 21st century, and it should be free and accessible to everybody.
 - GNU Pass is good, but it's hard to interact with it outside of terminal.
 
 * Why New CLI
@@ -15,18 +15,20 @@
 * Feature
 - List the entries with user-specified fields =keepass-cli -d <DATABSE> ls -f title username=
 - Server mode =keepass-cli -d <DATABASE> server --emacs=
+- Emacs integration uses pure =completing-read=, so you can use any completion engine you want.
 
 
-* Restriction
+* Restriction/Warning
 - It's read only! Please use official CLI to add/remove/edit entries/download icons.
+- It's only used/tested by me now.
 
 
 * Note
 The icon data is saved in the project directory, which is different between operating systems.
 
 For example, on macOS, the directory is =~/Library/Application Support/keepass-cli=.
 
-The directory path is generate by the following code from [[https://crates.io/crates/directories][directories]] crate. Please refer it to find your path.
+The directory path is generate by the following code from [[https://crates.io/crates/directories][directories]] crate. Please refer to it to find your path.
 #+begin_src rust
  ProjectDirs::from("", "", "keepass-cli")
 #+end_src
@@ -55,6 +57,8 @@ There are two functions: =keepass= and =keepass-inplace=.
 =keepass= will switch to a special buffer =keepass:main=.
 =keepass-inplace= will not.
 
+Please refer to the source code to find what you can customize.
+
 *** Screenshots for Emacs integration
 **** Interface
 [[./screenshots/keepass-inplace.png]]