Attribute import. Fixed #9.

Imported 24 attributes in 3 seconds. Not too shabby. :)

```
$ time ./attr-import.php
~/git/bippo-models/commerce/berbatik-attr-01.xml 
Loading Magento... OK.
Loading /home/ceefour/git/bippo-models/commerce/berbatik-attr-01.xml...
Loaded.
Create normal data attribute shop_id datatype: varchar label: Shop ID
Created normal varchar attribute shop_id #212.
Create normal data attribute local_sku datatype: varchar label: Local
SKU
Created normal varchar attribute local_sku #213.
Create normal data attribute local_price datatype: decimal label: Local
Price
Created normal decimal attribute local_price #214.
Create normal attribute item_color label: Warna opts: Hitam, Putih,
Abu-abu, Kuning, Merah, Hijau, Biru, Coklat, Pink, Jingga, Ungu
Created normal select attribute #215.
Create normal attribute item_size label: Ukuran opts: XS, S, M, L, XL,
Free Size
Created normal select attribute #216.
Create normal attribute material label: Bahan opts: Katun, Sutra, Rayon,
Spandex
Created normal select attribute #217.
Create normal attribute motif label: Motif opts: Tiga Negeri, Hokokai,
Jawa Baru, Kopi Tutung, Adik Baji, Kawung, Parang, Galaran, Lokcan,
Manuk Barunding, Demakan, Materos, Biantjoe, Gringsing, Sogan, Gurdo
Created normal select attribute #218.
Create normal attribute signature label: Signature opts: Oey Soe Tjoen,
T.O.T.O.T, OSK, Eliza Van Zuylen
Created normal select attribute #219.
Create normal attribute batik_technique label: Teknik Pembatikan opts:
Tulis Halus, Tulis, Tulis Kombinasi Cap, Cap, Cap Kombinasi Tulis,
Colet, Kombinasi Colet, Printing
Created normal select attribute #220.
Create normal attribute origin label: Origin / Asal Daerah opts:
Cirebon, Tasikmalaya, Garut, Indramayu, Solo, Jogja, Sragen, Lasem,
Pekalongan, Banyumas, Demak, Kudus, Madura, Madura, Bali, Sumatera,
Timor
Created normal select attribute #221.
Create normal attribute batik_age label: Age of Batik opts: Lawas, Baru,
Kuno
Created normal select attribute #222.
Create normal attribute condition label: Kondisi opts: Mulus, Cacat
Created normal select attribute #223.
Create normal attribute leather label: Leather opts: Cow, Premium Cow,
Goat, Lamb, Python, Cobra, Water Snake, Lizard, Suede
Created normal select attribute #224.
Create normal attribute lining label: Lining opts: Leather, Suede,
Cotton
Created normal select attribute #225.
Create normal data attribute length datatype: decimal label: Panjang
(cm)
Created normal decimal attribute length #226.
Create normal data attribute width datatype: decimal label: Lebar (cm)
Created normal decimal attribute width #227.
Create normal data attribute height datatype: decimal label: Tinggi (cm)
Created normal decimal attribute height #228.
Create normal data attribute bust_size datatype: decimal label: Lingkar
Dada (cm)
Created normal decimal attribute bust_size #229.
Create normal data attribute waist_size datatype: decimal label: Lingkar
Pinggang (cm)
Created normal decimal attribute waist_size #230.
Create normal data attribute dress_length datatype: decimal label:
Panjang Baju (cm)
Created normal decimal attribute dress_length #231.
Create normal data attribute shoe_length datatype: decimal label: Ukuran
General Sepatu (cm)
Created normal decimal attribute shoe_length #232.
Create normal data attribute heels_height datatype: decimal label: Heels
(cm)
Created normal decimal attribute heels_height #233.
Create normal data attribute shawl_length datatype: decimal label:
Panjang Shawl (cm)
Created normal decimal attribute shawl_length #234.
Create normal data attribute shawl_width datatype: decimal label: Lebar
Shawl (cm)
Created normal decimal attribute shawl_width #235.

real    0m3.134s
user    0m2.624s
sys     0m0.244s
```

Deleted 24 attributes in 2.7 seconds. Hey, it takes almost as long as
creating them in the first place. :-)

```
$ time ./attr-del.php shop_id local_sku local_price item_color item_size
material motif signature batik_technique origin batik_age   condition
leather lining length width height bust_size waist_size dress_length
shoe_length heels_height shawl_length shawl_width   
Loading Magento... OK.
Deleting attribute shop_id... DELETED.
Deleting attribute local_sku... DELETED.
Deleting attribute local_price... DELETED.
Deleting attribute item_color... DELETED.
Deleting attribute item_size... DELETED.
Deleting attribute material... DELETED.
Deleting attribute motif... DELETED.
Deleting attribute signature... DELETED.
Deleting attribute batik_technique... DELETED.
Deleting attribute origin... DELETED.
Deleting attribute batik_age... DELETED.
Deleting attribute condition... DELETED.
Deleting attribute leather... DELETED.
Deleting attribute lining... DELETED.
Deleting attribute length... DELETED.
Deleting attribute width... DELETED.
Deleting attribute height... DELETED.
Deleting attribute bust_size... DELETED.
Deleting attribute waist_size... DELETED.
Deleting attribute dress_length... DELETED.
Deleting attribute shoe_length... DELETED.
Deleting attribute heels_height... DELETED.
Deleting attribute shawl_length... DELETED.
Deleting attribute shawl_width... DELETED.

real    0m2.746s
user    0m2.112s
sys     0m0.160s
```