Update README with detailed usage instructions; switch workflows to MiniServ-nix-runner

.gitea/workflows/build.yml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   build:
-    runs-on: MiniServ-nix-runner
+    runs-on: nix
 
     steps:
       - name: Checkout repository

.gitea/workflows/test.yml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   test:
-    runs-on: MiniServ-nix-runner
+    runs-on: nix
 
     steps:
       - name: Checkout repository

.idea/jsonSchemas.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JsonSchemaMappingsProjectConfiguration">
+    <state>
+      <map>
+        <entry key="GitHub Workflow">
+          <value>
+            <SchemaInfo>
+              <option name="name" value="GitHub Workflow" />
+              <option name="relativePathToSchema" value="https://www.schemastore.org/github-workflow.json" />
+              <option name="applicationDefined" value="true" />
+              <option name="patterns">
+                <list>
+                  <Item>
+                    <option name="path" value=".gitea/workflows/test.yml" />
+                  </Item>
+                </list>
+              </option>
+            </SchemaInfo>
+          </value>
+        </entry>
+      </map>
+    </state>
+  </component>
+</project>