Add command to create branches.

Closes #100

src/main/java/org/springframework/data/release/cli/ReleaseCommands.java

@@ -206,14 +206,26 @@ class ReleaseCommands extends TimedCommand {
 				BranchMapping branches = git.createMaintenanceBranches(iteration, true);
 
 				// Set project version to maintenance once
-				setupMaintenanceVersions(iteration);
-			}
-		}
 				setupMaintenanceVersions(iteration, branches);
 			}
 		}
 	}
 
+	@CliCommand(value = "release create-branches")
+	public void createBranches(@CliOption(key = "", mandatory = true) TrainIteration iteration) throws Exception {
+
+		if (!iteration.getTrain().isAlwaysUseBranch()) {
+			throw new IllegalArgumentException(
+					String.format("Cannot create branches as train %s does not use branches.", iteration.getTrain().getCalver()));
+		}
+
+		// Create bugfix branches
+		BranchMapping branchMapping = git.createMaintenanceBranches(iteration, false);
+
+		// Set project version to maintenance once
+		setupMaintenanceVersions(iteration, branchMapping);
+	}
+
 	@CliCommand(value = "release documentation")
 	public void triggerDocumentation(@CliOption(key = "", mandatory = true) TrainIteration iteration,
 			@CliOption(key = "module", mandatory = false) String module) {