Update version documentation and requirements (#37)

Author: robastel

README.md

@@ -26,10 +26,15 @@ creating, updating, and deleting
 
 ## Installation
 
-```shell
-pip install dbt-invoke
-```
-  
+- If you are using dbt-core version 1.5.0 or later:
+  ```shell
+  pip install dbt-invoke
+  ```
+- If you are using a dbt-core version earlier than 1.5.0:
+  ```shell
+  pip install dbt-invoke~=0.2
+  ```
+
 
 ## Usage
 
@@ -215,7 +220,4 @@ dbt-invoke properties.delete <options>
   ephemeral materializations. 
   - This may be partially remedied by increasing the value of the `--threads` 
     option in `dbt-invoke properties.update`.
-- dbt-invoke is tested against:
-  - dbt 0.18, 0.19, 1.1, and 1.4
-  - macos-latest, windows-latest, ubuntu-latest
 - dbt-invoke has not been tested across different types of data warehouses.

setup.py

@@ -22,7 +22,7 @@
     url='https://github.com/Dashlane/dbt-invoke',
     packages=find_packages(),
     install_requires=['invoke>=1.4.1', 'PyYAML>=5.1', 'ruamel.yaml>=0.17.12'],
-    python_requires='>=3.6.0',
+    python_requires='>=3.7.0',
     entry_points={
         'console_scripts': ["dbt-invoke = dbt_invoke.main:program.run"]
     },