fix SPM contents, add SPM artefacts to .gitignore

.gitignore

@@ -15,3 +15,10 @@ profile
 DerivedData
 .idea/
 *.xccheckout
+
+# SPM
+/.build
+/Packages
+/*.xcodeproj
+.swiftpm
+Package.resolved

Package.swift

@@ -4,11 +4,17 @@ import PackageDescription
 
 let package = Package(
     name: "SwiftyFORM",
+    platforms: [
+        .iOS(.v9)
+    ],
     products: [
         // Products define the executables and libraries produced by a package, and make them visible to other packages.
         .library(
             name: "SwiftyFORM",
-            targets: ["SwiftyFORM"]),
+            targets: [
+                "SwiftyFORM"
+            ]
+        ),
     ],
     dependencies: [
         // Dependencies declare other packages that this package depends on.
@@ -20,6 +26,8 @@ let package = Package(
         .target(
             name: "SwiftyFORM",
             dependencies: [],
-            path: "Source"),
-    ]
+            path: "Source"
+        ),
+    ],
+    swiftLanguageVersions: [.v5]
 )

SwiftyFORM.xcodeproj/project.pbxproj

@@ -109,6 +109,7 @@
 		42FABBC41D4143650066E45A /* PrecisionSlider.swift in Sources */ = {isa = PBXBuildFile; fileRef = 42FABBC31D4143650066E45A /* PrecisionSlider.swift */; };
 		739649131D2B6B7400E12A96 /* AttributedTextCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 739649121D2B6B7400E12A96 /* AttributedTextCell.swift */; };
 		739649151D2B6CC100E12A96 /* AttributedTextFormItem.swift in Sources */ = {isa = PBXBuildFile; fileRef = 739649141D2B6CC000E12A96 /* AttributedTextFormItem.swift */; };
+		971783F923521A7B00A0948D /* Package.swift in Sources */ = {isa = PBXBuildFile; fileRef = 971783F823521A7B00A0948D /* Package.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -227,6 +228,7 @@
 		42FABBC31D4143650066E45A /* PrecisionSlider.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PrecisionSlider.swift; sourceTree = "<group>"; };
 		739649121D2B6B7400E12A96 /* AttributedTextCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AttributedTextCell.swift; sourceTree = "<group>"; };
 		739649141D2B6CC000E12A96 /* AttributedTextFormItem.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AttributedTextFormItem.swift; sourceTree = "<group>"; };
+		971783F823521A7B00A0948D /* Package.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Package.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -251,6 +253,7 @@
 		4208F22C19F95C73003E834D = {
 			isa = PBXGroup;
 			children = (
+				971783F823521A7B00A0948D /* Package.swift */,
 				428682F61B346CFE0028DB2F /* Source */,
 				4286835D1B346D0C0028DB2F /* Tests */,
 				4208F23619F95C73003E834D /* Products */,
@@ -571,6 +574,7 @@
 				42108D191B34E9F60067FEAA /* FormItem.swift in Sources */,
 				42D005101B96243000986B3B /* WillDisplayCellDelegate.swift in Sources */,
 				42108D211B34E9F60067FEAA /* TextFieldFormItem.swift in Sources */,
+				971783F923521A7B00A0948D /* Package.swift in Sources */,
 				428683341B346CFE0028DB2F /* StaticTextCell.swift in Sources */,
 				423E31411D6383FE0048D8C3 /* TableViewSectionArray.swift in Sources */,
 				428683531B346CFE0028DB2F /* DebugViewController.swift in Sources */,