README:cjson sqlite download

c/cjson/README.md

@@ -11,6 +11,10 @@ LLGo wrapper of DaveGamble/cJSON
 ```sh
 brew install cjson 
 ```
+### on linux
+```sh
+apt-get install -y libcjson-dev
+```
 ### from source code
 ```sh
 git clone https://github.com/goplus/cjson.git

c/sqlite/README.md

@@ -8,6 +8,15 @@ LLGo wrapper of sqlite
 
 ## How to install
 
+### on macOS (Homebrew)
+```sh
+brew install sqlite3
+```
+### on linux
+```sh
+apt-get install -y libsqlite3-dev
+```
+### from source code
 ```sh
 git clone https://github.com/goplus/sqlite.git
 cd sqlite