Grab and insert the Buildcraft License file into the jar

build.gradle

@@ -181,12 +181,16 @@ jar {
 	destinationDir = file("build/tmp")
 	archiveName = "main.jar"
 
+	// Copy various READMEs and Licensing files into the jar
 	into ('forestry/api') {
 		from project.apiForestry + "/LICENSE.txt"
 	}
 	into ('cofh/api') {
 		from project.apiRedstoneFlux + "/LICENSE - LGPLv3.txt"
 	}
+	into ('buildcraft/api') {
+		from "./src/main/java/buildcraft/LICENSE-API"
+	}
 }
 
 task mainJarSigned ( type: Jar, dependsOn: 'reobf' ) {