Fix setup.py, clean code and update readme

Author: molejar

README.md

@@ -49,6 +49,10 @@ In case of development, install it from cloned sources:
 2. Specify the `--user` option to install locally into your home directory (export "~/.local/bin" into PATH variable if haven't).
 3. Run the command in a [virtualenv](https://virtualenv.pypa.io/en/latest/) local to a specific project working set.
 
+> For running `mboot` module or CLI without root privileges in Linux OS copy following udev rules
+[90-imx-sdp.rules](https://github.com/molejar/pyIMX/blob/master/udev/90-imx-sdp.rules)
+into `/etc/udev/rules.d` directory and reload it with command: `sudo udevadm control --reload-rules`.
+
 Usage
 -----
 
@@ -117,8 +121,8 @@ if devices:
         print(str(e))
 ```
 
-`mboot` module is implementing also logging functionality for easy debugging of communication interfaces. All what you 
-need to do is just import `logging` module and set the logging level (`DEBUG` or `INFO`) with following line of code: 
+`mboot` module is implementing also logging functionality for easy debugging all communication interfaces. To get it
+working you need only import `logging` module and set the logging level (`DEBUG` or `INFO`) with following line of code: 
 `logging.basicConfig(level=logging.DEBUG)`
 
 ```python
@@ -150,8 +154,8 @@ DEBUG:MBOOT:USB:Close Interface
 [ mboot ] Tool
 --------------
 
-pyMBoot is distributed with command-line utility `mboot`, which demonstrate the complete functionality of this library and
-can be used as replacement of `blhos` tool. If you write `mboot` into shell and click enter, then you get the description 
+The `mboot` module is distributed with command-line utility, which demonstrate the complete functionality of this library 
+and can be used as replacement of `blhos` tool. If you write `mboot` into shell and click enter, then you get the description 
 of its usage. For getting the help of individual commands just use `mboot <command name> -?`.
 
 ``` bash

mboot/mcuboot.py

@@ -82,7 +82,7 @@ def _check_response(self, cmd_packet: CmdPacket, cmd_response: CmdResponse, logg
         cmd_name = CommandTag[cmd_packet.header.tag]
 
         if not isinstance(cmd_response, CmdResponse):
-            raise McuBootError(f"CMD: {cmd_name} Error: Unsupported response format")
+            raise McuBootError(f"CMD: {cmd_name} -> Unsupported response format")
 
         self._status_code = cmd_response.status_code
 
@@ -158,7 +158,7 @@ def _read_data(self, cmd_tag: int, length: int, timeout: int = 1000) -> bytes:
         if len(data) < length or self.status_code != StatusCode.SUCCESS:
             logger.debug(f"CMD: Received {len(data)} from {length} Bytes, {self.status_info}")
             if self._cmd_exception:
-                raise McuBootCommandError(CommandTag[cmd_tag], response.status_code)
+                raise McuBootCommandError(CommandTag[cmd_tag], self.status_code)
         else:
             logger.info(f"CMD: Successfully Received {len(data)} from {length} Bytes")
 
@@ -189,7 +189,7 @@ def _send_data(self, cmd_tag: int, data: bytes) -> bool:
         logger.debug('RX-PACKET: ' + str(response))
         self._status_code = response.status_code
         if response.status_code != StatusCode.SUCCESS:
-            logger.debug(f"CMD: Send Error, " + self.status_info)
+            logger.debug("CMD: Send Error, " + self.status_info)
             if self._cmd_exception:
                 raise McuBootCommandError(CommandTag[cmd_tag], self.status_code)
             return False

setup.py

@@ -8,7 +8,7 @@
 
 
 from os import path
-from setuptools import setup
+from setuptools import setup, find_packages
 from mboot import __version__, __license__, __author__, __contact__
 
 
@@ -43,15 +43,15 @@ def get_long_description():
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
-        'Operating System :: POSIX :: Linux',
+        'License :: OSI Approved :: BSD License',
         'Operating System :: Microsoft :: Windows',
+        'Operating System :: POSIX :: Linux',
         'Environment :: Console',
-        'License :: OSI Approved :: BSD License',
         'Topic :: Scientific/Engineering',
         'Topic :: Software Development :: Embedded Systems',
         'Topic :: Utilities',
     ],
-    packages=['mboot'],
+    packages=find_packages('.'),
     entry_points={
         'console_scripts': [
             'mboot = mboot.__main__:main',