Update README.md with some additional information of installing iroha.

iroha-drip-general-master/README.md

@@ -47,7 +47,11 @@ If above does not work, try restarting. You can check that user is part of docke
 
 ### Iroha
 
-You need to first compile [my version of Iroha 1.2.0](https://gitlab.liu.se/drip_iroha/iroha-1.2.0-drip), as that version contains other regex validation for account id that allows some characters contained in a HHIT. Instructions to compile can be found [here](https://iroha.readthedocs.io/en/main/build/index.html).
+The first way: you need to first compile [my version of Iroha 1.2.0](https://gitlab.liu.se/drip_iroha/iroha-1.2.0-drip), as that version contains other regex validation for account id that allows some characters contained in a HHIT. Instructions to compile can be found [here](https://iroha.readthedocs.io/en/main/build/index.html).
+
+Try this when the first way is hard and complex to achieve:
+The second way is to use command "pip install iroha" on Linux (the newest version of iroha on 5th/Dec/2022 is 1.4.1.1). Additionally, to run the code, the version of package named "protobuf" needs to be downgrade to the version <= 3.20.1 (just use 3.20.1), by using command "pip install protobuf==3.20.1". Other than that, you may also meet the problem of lacking packages "gps" and "dotenv", theses can be installed by using "pip install gps" and "pip install python-dotenv", the newest version will be auto installed.
+
 
 Once it's compiled, you would need to start it with the correct configurations. These can be found in iroha/node_config (in this repository). In the same folder where you have compiled the iroha binaries (usually in `build/bin`), copy over the configration files and run: