Merge pull request jsGanttImproved#138 from jsGanttImproved/develop

Add Column in Object and Fix for IE

fix some references and add lock file

update license

Update latest release number

Fixed weighted average (jsGanttImproved#21 jsGanttImproved#22)

Now the completion of a task is the average of its subtasks weighted by the duration of each one.

In addition to changing the logo as requested, the NumKid property was kept and the vWeight parameter was added to be used for the weighted average.

v1.7.5.2 - Honour dates on standard group tasks

v1.7.5.1 - Tool Tip fix and move dates so current date marker is visible

Updates related to GitHub Migration

* Moved ProjectHome.md from wiki branch to README.md in master branch.
* Reformatted files to use Unix line feeds.
* Point files at GitHub rather than Google Code

Updated to be consistent with v1.7

Change Download location link to show in list format by default.