A video tutorial going through how to use it will be done later, though if anyone else wants to volunteer doing one that would be great aswel!!  Tried to make the launcher as intuitive as possible, but open to suggestions.

Latest features:
1.40- Color icons, and more improvements.

It will auto download the base files required to run the modpack, the modpack only includes mods and additional library files that are required to run the mods, that is why you will still need to download all the base minecraft resources such as sounds mainly.

Change Log... check launcher [Updates] for full log.

----v1.40---- 11/02/2015 ----
- Color icons added!
- Mc version json files "inheritsFrom": "?" now working properly.
- Window resizing working properly for most tabs.
- Link copying to clipboard option added or open in default browser directly.
- [Mod/Addons]>

has option to select other mc version modlists.
- Mc Version list, now has a folder icon next to it which adds a context menu, so you can open related folders quicker.

----v1.38---- 8/8/2014 ----
- Bug fixes: "Object reference not set to an instance of an object"  prevented
- Color cell shading & "Source" on the (list of mods) tab removed, not needed.

----v1.37---- 1/8/2014 ----
- Bug fixes:
- twitch_access_token is now retrieved if you have premium login enabled.
  And your twitch account has been linked on your mojang profile
- 32/64bit twitch platform files are extracted properly now.
- twitch streaming now works with 1.7.10+
- Launch button is deactivated for 4seconds after being clicked to prevent
  accidental launches of minecraft versions (slowing the loading)
- New Feature: AutoScroll added to [About] section for log support
- [Settings] and tick [Show all console info], then [Launch], then [About]
- Bunch of other bugfixes

----v1.36---- 15/7/2014 ----
- New Feature:  Mod listings can be found on [Mod/Addons]> (list of Mods)
- Bug fix: Modpacks/MCVersions grid row styling now accurate all the time
- Launcher is now resizable, sometimes useful for the grid views.

----v1.35---- 11/7/2014 ----
- New Feature: [Mod/Addons] tab now contains the long awaited modpacks
- Moved Java Portable downloads into the [Mod/Addons] tab.
- Many bugfixes with downloading modpacks, extracting, uninstalling mods.
- Known issue: Once a mod or mcversion has been installed the highlight color
  may still show red on Installed even, just manually reselect it etc

----v1.34---- 02/7/2014 ----
- Bug fix: Zip extraction progress now accurate.
- No longer requires launcher restart when adding Java portable versions.

----v1.33---- 26/6/2014 ----
- Bug fix: now downloads all the files required for newer 1.7.10+ releases.
  I broke it in 1.32 fixing another bug, so be sure to upgrade to this version!!

----v1.32---- 22/6/2014 ----
- Java 8 Portable 32/64bit added into 'Updates' tab for download & install.
- Console output option added in 'Settings' tab, lets you see detailed log
  information, and any extra info and errors while loading and running game.
- Copy log button added to 'About' tab.

----v1.31---- 20/6/2014 ----
- A fake launcher_profile.json added if the file does not already exist,
required so forge installer works.
-Create gamedir folder in kz launcher incase minecraft doesn't (prevents
a crash if forge loader is installed as it loads up before minecraft and looks
for mods in the gamedir when starting up)

----v1.30---- 30/5/2014 ----
-Check updates now gets latest launcher version information,
downloads and prompts to updats the launcher after app close.
-"Minecraft Launcher.exe" can be renamed and will still work including
updates.
- Uninstalling a minecraft version will prompt to remove the gamedata
folder aswel. (assets(sounds,textures, library files, will not be removed as
they are used by multiple minecraft versions. You can still manually delete
files/folders, and it will redownload the files required when you install
a new minecraft version.
- Error handling for canceled downloads and incomplete files will be removed.
- Extra debuging code added, [Settings]>Debug (enabled/ticked), will show
more error information if there is any.

Download Links
(click the download link in the button, not the button :))

Install Setup:
http://kraftzone.net/downloads/KzSetup_1.40.exe

The above will offer to install to default location of  %appdata%.minecraft  and create shortcut icons in startmenu
---------or ----------
The below is do it yourself install (extract all .zip files into a new folder you created):

Portable Zip :
http://kraftzone.net/downloads/MinecraftLauncher_v1.40.zip

Run "Minecraft Launcher.exe" (this file can be renamed, it will still work)

Disclaimer: While its fully tested to work on my end, I can't fully test every computer scenario or possible bug, so if anything goes wrong let me know and I'll try to help fix it. Also this launcher only connects to Mojang for mc releases and resource files, and Kraftzone.net for modpacks, javaportable and launcher updates (and that's only if you hit the update button to check)

Instruction help

Once installed goto [Settings]>[Minecraft Releases] to get full minecraft releases.

Or use the [Mod/Addons] to get modpack releases.

Fill in "MC Username", select options, add a "Profile Name" then click [Add Profile], you then select name at the bottom of the screen and press [Launch]

Coming Next
-I do plan to make it easier to create you own modpacks, and upload them.
-An easier way of enabling/disabling mods directly in the launcher without having to get messy with moving/renaming files before launching.
-Always more bug fixes