Updates information to new functions in README.md.

README.md

 # Atmospheric Science Tools
-
 Implementation of various tools to analyse, transform and plot data.
 Additional functions are available to calculate various parameters,
 i.e. density of dry air or surface tension of sea water.
+There are also some functions to calculate the transport efficiency
+for a given experimental setup.
 
 # Installation
-Clone this repository by running the following inside a CLI
+Clone this repository by running the following inside a command-line interface (CLI).
 
+```
 git clone https://codebase.helmholtz.cloud/alexander.boehmlaender/as_tools.git
+```
+
+# Create a custom environment
+Work in progress currently.