Add requirements.in (#6)

Co-authored-by: Thomas Krijnen <[email protected]>

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python3 -m pip install pytest lark-parser
+          python3 -m pip install -r requirements.in pytest
 
       - name: Run test suite
         run: |

README.md

@@ -1,6 +1,6 @@
 # Step Physical File Validator
 
-Pure-python Step Physical File Validator and Parser implemented using Lark  (`pip install lark-parser`).
+Pure-python Step Physical File Validator and Parser implemented using Lark  (`pip install -r requirements.in`).
 
 ## Example command line usage:
 
@@ -34,4 +34,4 @@ Expecting HEADER
 
 $ python main.py fixtures\pass_1.ifc
 Valid
-~~~
+~~~

requirements.in

@@ -0,0 +1 @@
+lark-parser