Add badges to README and GitHub funding.

.github/FUNDING.yml

@@ -0,0 +1 @@
+custom: https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=donations%40cthing.com&item_name=cthing-projectversion&currency_code=USD&source=url

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v3
+      - name: Run clean build javadoc
+        run: ./gradlew clean build javadoc

README.md

@@ -1,5 +1,9 @@
 # ![C Thing Software](https://www.cthing.com/branding/CThingSoftware-57x60.png "C Thing Software") cthing-projectversion
 
+[![CI](https://github.com/cthing/cthing-projectversion/actions/workflows/ci.yml/badge.svg)](https://github.com/cthing/cthing-projectversion/actions/workflows/ci.yml)
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.cthing/cthing-projectversion/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.cthing/cthing-projectversion)
+[![javadoc](https://javadoc.io/badge2/org.cthing/cthing-projectversion/javadoc.svg)](https://javadoc.io/doc/org.cthing/cthing-projectversion)
+
 A version object for C Thing Software projects. This is a semantic version with additional build identification
 information. The additional information indicates the build type and whether the build is being performed by the
 C Thing Software Continuous Integration service or on a developer's machine. The following versioning scheme is