Update README.md

Author: Tobias Burdow [Kaleidox]

README.md

@@ -0,0 +1,47 @@
+# comroid polyfills
+
+### spellbind (Gradle)
+```groovy
+// using JetBrains Space repository
+    repositories {
+        maven {
+            url "https://maven.jetbrains.space/comroid/repo"
+            credentials.username "Anonymous.User"
+            credentials.password "anonymous"
+        }
+    }
+
+    dependencies {
+        implementation 'org.comroid:common-util-spellbind:0.10.0'
+    }
+
+// using mavenCentral repository
+	repositories.jcenter()
+
+	dependencies {
+    	implementation 'org.comroid:common-util-spellbind:0.10.0'
+	}
+```
+
+### trie (Gradle)
+```groovy
+// using JetBrains Space repository
+    repositories {
+        maven {
+            url "https://maven.jetbrains.space/comroid/repo"
+            credentials.username "Anonymous.User"
+            credentials.password "anonymous"
+        }
+    }
+
+    dependencies {
+        implementation 'org.comroid:common-util-trie:1.0.0'
+    }
+
+// using mavenCentral repository
+	repositories.jcenter()
+
+	dependencies {
+    	implementation 'org.comroid:common-util-trie:1.0.0'
+	}
+```