Consistency in y/n prompts #141 fix, where certain prompts would fail if the user gave 'Y' instead of 'y' to continue, now all prompting is consistent

Author: John Bute

Sources/Swiftly/Init.swift

@@ -77,7 +77,7 @@ internal struct Init: SwiftlyCommand {
             \(installMsg)
             """)
 
-            if SwiftlyCore.readLine(prompt: "Proceed with the installation? [Y/n] ") == "n" {
+            guard promptForConfirmation(defaultBehavior: true) else {
                 throw SwiftlyError(message: "Swiftly installation has been cancelled")
             }
         }
@@ -93,9 +93,7 @@ internal struct Init: SwiftlyCommand {
                 SwiftlyCore.print("  \(swiftlyBinDir.appendingPathComponent(executable).path)")
             }
 
-            let proceed = SwiftlyCore.readLine(prompt: "Proceed? [y/N]") ?? "n"
-
-            guard proceed == "y" else {
+            guard promptForConfirmation(defaultBehavior: false) else {
                 throw SwiftlyError(message: "Swiftly installation has been cancelled")
             }
         }

Sources/Swiftly/Install.swift

@@ -266,9 +266,7 @@ struct Install: SwiftlyCommand {
                     SwiftlyCore.print("  \(swiftlyBinDir.appendingPathComponent(executable).path)")
                 }
 
-                let proceed = SwiftlyCore.readLine(prompt: "Proceed? [y/N]") ?? "n"
-
-                guard proceed == "y" else {
+                guard promptForConfirmation(defaultBehavior: false) else {
                     throw SwiftlyError(message: "Toolchain installation has been cancelled")
                 }
             }