[Add] FLEX 4.2.1
diff --git a/Specs/f/7/1/FLEX/4.2.1/FLEX.podspec.json b/Specs/f/7/1/FLEX/4.2.1/FLEX.podspec.json
new file mode 100644
index 0000000..65a4fd0
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+++ b/Specs/f/7/1/FLEX/4.2.1/FLEX.podspec.json
@@ -0,0 +1,63 @@
+{
+  "name": "FLEX",
+  "version": "4.2.1",
+  "summary": "A set of in-app debugging and exploration tools for iOS",
+  "description": "- Inspect and modify views in the hierarchy.\n- View Detailed network request history.\n- See the properties and ivars on any object.\n- Dynamically modify many properties and ivars.\n- Dynamically call instance and class methods.\n- Access any live object via a scan of the heap.\n- See system log messages (i.e. from `NSLog()`).\n- View the file system within your app's sandbox.\n- Explore all classes in your app and linked systems frameworks (public and private).\n- Quickly access useful objects such as `[UIApplication sharedApplication]`, the app delegate, the root view controller on the key window, and more.\n- Dynamically view and modify `NSUserDefaults` values.",
+  "homepage": "https://github.com/Flipboard/FLEX",
+  "screenshots": [
+    "http://engineering.flipboard.com/assets/flex/basic-view-exploration.gif",
+    "http://engineering.flipboard.com/assets/flex/advanced-view-editing.gif",
+    "http://engineering.flipboard.com/assets/flex/heap-browser.gif",
+    "http://engineering.flipboard.com/assets/flex/file-browser.gif",
+    "http://engineering.flipboard.com/assets/flex/nsuserdefaults-editor.gif",
+    "http://engineering.flipboard.com/assets/flex/system-libraries-browser.gif",
+    "http://engineering.flipboard.com/assets/flex/flex-readme-reverse-1.png",
+    "http://engineering.flipboard.com/assets/flex/flex-readme-reverse-2.png"
+  ],
+  "license": {
+    "type": "BSD",
+    "file": "LICENSE"
+  },
+  "authors": {
+    "Tanner Bennett": "tannerbennett@me.com"
+  },
+  "social_media_url": "https://twitter.com/NSExceptional",
+  "platforms": {
+    "ios": "9.0"
+  },
+  "source": {
+    "git": "https://github.com/Flipboard/FLEX.git",
+    "tag": "4.2.1"
+  },
+  "source_files": "Classes/**/*.{h,c,m,mm}",
+  "frameworks": [
+    "Foundation",
+    "UIKit",
+    "CoreGraphics",
+    "ImageIO",
+    "QuartzCore",
+    "WebKit",
+    "Security",
+    "SceneKit"
+  ],
+  "libraries": [
+    "z",
+    "sqlite3"
+  ],
+  "requires_arc": true,
+  "compiler_flags": "-Wno-unsupported-availability-guard -Wno-strict-prototypes",
+  "public_header_files": [
+    "Classes/*.h",
+    "Classes/Manager/*.h",
+    "Classes/Toolbar/*.h",
+    "Classes/GlobalStateExplorers/Globals/FLEXGlobalsEntry.h",
+    "Classes/Core/**/*.h",
+    "Classes/Utility/Runtime/Objc/**/*.h",
+    "Classes/ObjectExplorers/**/*.h",
+    "Classes/Editing/**/*.h",
+    "Classes/Utility/FLEXMacros.h",
+    "Classes/Utility/Categories/*.h",
+    "Classes/Utility/FLEXAlert.h",
+    "Classes/Utility/FLEXResources.h"
+  ]
+}