Fix build select with multiple folders on Windows

In Windows, when you had multiple folders open, this would fail to match
the folder the file currently open resides in, causing it to be unable
to detect a pre-existing project.xml, for instance.

Using the platform-agnostic os.sep fixed this issue.
Merge pull request #149 from Zshazz/zshazz_fix_sep

Fix build select with multiple folders on Windows
pass dce flag (spotted by https://github.com/clemos/try-haxe/issues/50)
Update README.markdown
add support for "go to definition" using haxe 3.2 new --display @position feature
Open a file in correct case in Windows
Merge pull request #148 from nadako/master

Add support for "go to definition" using haxe 3.2 new --display @position feature
fixes to "goto definition" feature
changed binding to `Ctrl+<` as `Ctrl+[` doesn't seem to work on french keyboards
Update README.markdown
added "find definition" to context menu + error reporting in status
attempt to fix #156
add -dce parameter to hxml highlighting
add cs and python to hxml completions
Merge pull request #158 from nadako/master

a couple of hxml highlighting/completion fixes
Replace two spaces indentation by four spaces
Merge pull request #161 from mlopes/master

Replace two spaces indentation by four spaces
disable hints when autocomplete disabled
Include <haxedef> nodes for nme/lime/openfl

Append haxedef nodes as "-D def_name" to the args list  passed to the compiler.
Syntax fix for package names with numbers (flash.display3D)