chore: README.md

README.md

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+# Utils Library
+
+## Rust Libraries Collections Utilities for **applications**
+
+Part of the following developments:
+
+- [CloudMandala](https://rlung.librecloud.online/LibreCloud/CloudMandala#cloudmandala)
+- [Zteron](https://rlung.librecloud.online/LibreCloud/CloudMandala#cloudmandala)
+
+Includes applications functions for following areas:
+
+- Files handle in json,yaml,toml
+- RGB colors
+- Run command
+
+### Criteria
+
+In a basic application scenario this group or library collections are included together.
+
+Unapdating packages or dependencies shoud be keep in sync among <u>Cargo.toml</u> declarations.
+
+### How to use
+
+1 - Clone or download this lib in a path, better outside of target development
+
+2 - Get current version from <u>Cargo.toml</u>
+
+3 - <u>For each member of</u>  of **Defs Library** one line like the one below should be included in <u>target development Cargo.toml</u> (adjust version & path) and **use** whatever is need.
+
+```toml
+app_tools = { version = "0.1.0", path = "../lib/utils/app_tools" }
+```
+
+To include all libraries:
+
+```toml
+app_tools = { version = "0.1.0", path = "../lib/utils/app_tools" }
+ssh_utils = { version = "0.1.0", path = "../lib/utils/ssh_utils" }
+```
+
+### Structure
+
+Each directory contains a Library dedicated to applications common needs:
+Inside of each directory README.md and TODO.md files has more details.
+
+#### app_tools
+
+App utilities
+
+<pre>
+app_tools/
+├── Cargo.toml
+├── README.md
+├── TODO.md
+└── src
+    └── lib.rs
+</pre>
+
+#### ssh_utils
+
+SSH utilities
+
+<pre>
+ssh_utils/
+├── Cargo.toml
+├── README.md
+├── TODO.md
+└── src
+    └── lib.rs
+</pre>
+
+## Author
+
+- [Jesús Pérez](https://info.jesusperez.pro).
+
+## License
+
+MIT