Credit to Eric Golde originally :)

ExampleClient.json

{
  "id": "ExampleClient",
  "time": "2014-09-02T01:24:35-07:00",
  "releaseTime": "2014-09-02T01:24:35-07:00",
  "type": "release",
  "minecraftArguments": "--username ${auth_player_name} --version ${version_name} --gameDir ${game_directory} --assetsDir ${assets_root} --assetIndex ${assets_index_name} --uuid ${auth_uuid} --accessToken ${auth_access_token} --userProperties ${user_properties} --userType ${user_type}",
  "libraries": [
	{
	  "name": "com.mojang:netty:1.6"
	},
    {
      "name": "java3d:vecmath:1.5.2"
    },
    {
      "name": "net.sf.trove4j:trove4j:3.0.3"
    },
    {
      "name": "com.ibm.icu:icu4j-core-mojang:51.2"
    },
    {
      "name": "net.sf.jopt-simple:jopt-simple:4.6"
    },
    {
      "name": "com.paulscode:codecjorbis:20101023"
    },
    {
      "name": "com.paulscode:codecwav:20101023"
    },
    {
      "name": "com.paulscode:libraryjavasound:20101123"
    },
    {
      "name": "com.paulscode:librarylwjglopenal:20100824"
    },
    {
      "name": "com.paulscode:soundsystem:20120107"
    },
    {
      "name": "io.netty:netty-all:4.0.15.Final"
    },
    {
      "name": "com.google.guava:guava:17.0"
    },
    {
      "name": "org.apache.commons:commons-lang3:3.3.2"
    },
    {
      "name": "commons-io:commons-io:2.4"
    },
    {
      "name": "commons-codec:commons-codec:1.9"
    },
    {
      "name": "net.java.jinput:jinput:2.0.5"
    },
    {
      "name": "net.java.jutils:jutils:1.0.0"
    },
    {
      "name": "com.google.code.gson:gson:2.2.4"
    },
    {
      "name": "com.mojang:authlib:1.5.21"
    },
    {
      "name": "com.mojang:realms:1.6.1"
    },
	{
	  "name": "com.mojang:netty:1.6"
	},
    {
      "name": "org.apache.commons:commons-compress:1.8.1"
    },
    {
      "name": "org.apache.httpcomponents:httpclient:4.3.3"
    },
    {
      "name": "commons-logging:commons-logging:1.1.3"
    },
    {
      "name": "org.apache.httpcomponents:httpcore:4.3.2"
    },
    {
      "name": "org.apache.logging.log4j:log4j-api:2.0-beta9"
    },
    {
      "name": "org.apache.logging.log4j:log4j-core:2.0-beta9"
    },
    {
      "name": "org.lwjgl.lwjgl:lwjgl:2.9.1",
      "rules": [
        {
          "action": "allow"
        },
        {
          "action": "disallow",
          "os": {
            "name": "osx"
          }
        }
      ]
    },
    {
      "name": "org.lwjgl.lwjgl:lwjgl_util:2.9.1",
      "rules": [
        {
          "action": "allow"
        },
        {
          "action": "disallow",
          "os": {
            "name": "osx"
          }
        }
      ]
    },
    {
      "name": "org.lwjgl.lwjgl:lwjgl-platform:2.9.1",
      "rules": [
        {
          "action": "allow"
        },
        {
          "action": "disallow",
          "os": {
            "name": "osx"
          }
        }
      ],
      "natives": {
        "linux": "natives-linux",
        "windows": "natives-windows",
        "osx": "natives-osx"
      },
      "extract": {
        "exclude": [
          "META-INF/"
        ]
      }
    },
    {
      "name": "org.lwjgl.lwjgl:lwjgl:2.9.2-nightly-20140822",
      "rules": [
        {
          "action": "allow",
          "os": {
            "name": "osx"
          }
        }
      ]
    },
    {
      "name": "org.lwjgl.lwjgl:lwjgl_util:2.9.2-nightly-20140822",
      "rules": [
        {
          "action": "allow",
          "os": {
            "name": "osx"
          }
        }
      ]
    },
    {
      "name": "org.lwjgl.lwjgl:lwjgl-platform:2.9.2-nightly-20140822",
      "rules": [
        {
          "action": "allow",
          "os": {
            "name": "osx"
          }
        }
      ],
      "natives": {
        "linux": "natives-linux",
        "windows": "natives-windows",
        "osx": "natives-osx"
      },
      "extract": {
        "exclude": [
          "META-INF/"
        ]
      }
    },
    {
      "name": "net.java.jinput:jinput-platform:2.0.5",
      "natives": {
        "linux": "natives-linux",
        "windows": "natives-windows",
        "osx": "natives-osx"
      },
      "extract": {
        "exclude": [
          "META-INF/"
        ]
      }
    },
    {
      "name": "tv.twitch:twitch:6.5"
    },
    {
      "name": "tv.twitch:twitch-platform:6.5",
      "rules": [
        {
          "action": "allow"
        },
        {
          "action": "disallow",
          "os": {
            "name": "linux"
          }
        }
      ],
      "natives": {
        "linux": "natives-linux",
        "windows": "natives-windows-${arch}",
        "osx": "natives-osx"
      },
      "extract": {
        "exclude": [
          "META-INF/"
        ]
      }
    },
    {
      "name": "tv.twitch:twitch-external-platform:4.5",
      "rules": [
        {
          "action": "allow",
          "os": {
            "name": "windows"
          }
        }
      ],
      "natives": {
        "windows": "natives-windows-${arch}"
      },
      "extract": {
        "exclude": [
          "META-INF/"
        ]
      }
    }
  ],
  "mainClass": "net.minecraft.client.main.Main",
  "minimumLauncherVersion": 14,
  "assets": "1.8"
}