Fix build error for grunt build on brackets_server (#29)
Fix build error for grunt build on brackets_server (#29)

Add implementation to check whether detected file item is directory on the addEmbeddedExtesions() function.
Hence only directory will be added as an embedded extension.

Signed-off-by: KwangHyuk Kim <b1801edc8b4b8c4218294fe97cfce980cbec2621@samsung.com>
ws29jung/WATT,HunseopJeong/WATT,ws29jung/WATT,HunseopJeong/WATT,HunseopJeong/WATT,HunseopJeong/WATT,ws29jung/WATT,Kwanghyuk-Kim/WATT,hyundukkim/WATT,Kwanghyuk-Kim/WATT,Jw00/WATT,HunseopJeong/WATT,ws29jung/WATT,Jw00/WATT,hyundukkim/WATT,hyundukkim/WATT,hyundukkim/WATT,Jw00/WATT,Jw00/WATT,Kwanghyuk-Kim/WATT,HunseopJeong/WATT,Kwanghyuk-Kim/WATT