Create PCK.md

Formats/PCK.md

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+| Name | Size (per element) | Description |
+| :-:|:-:|:-:|
+| PCK Type | (int32)0x4 | indicates PCK Format
+| [Look-Up Table](./#lookupTable) | variable | a list of all possible tags a file can have
+| [File Entries](./#entries) | variable | an index of all files within the PCK, contains size, type, and filename
+| [File Contents](./#contents) | variable | all files within the PCK, includes file tags
+
+## lookupTable
+
+| Name | Size (per element) | Description |
+| :-:|:-:|:-:|
+| Count | (int32)0x4 | Amount of tags in the table
+
+(repeated per count)
+| Name | Size (per element) | Description |
+| :-:|:-:|:-:|
+| Index | (int32)0x4 | numerical position within the table.
+| Value | variable | a string(int16 indicates length, then Little endian Unicode string of specified length) indicating tag name
+
+## entries
+
+
+| Name | Size (per element) | Description |
+| :-:|:-:|:-:|
+| Count | (int32)0x4 | Amount of entries in the index
+
+(repeated per count)
+| Name | Size (per element) | Description |
+| :-:|:-:|:-:|
+| File Size | (int32)0x4 | indicates size in bytes of a file
+| File type | (int32)0x4 | indicates type of file(Skin file, cape file, models, colours, etc)
+| File Name | variable | a string(int16 indicates length, then Little endian Unicode string of specified length) indicating file name
+
+## contents
+
+
+| Name | Size (per element) | Description |
+| :-:|:-:|:-:|
+| Count | (int32)0x4 | Amount of entries in the tag index
+| Tags | variable | the tags and values of the file
+| Data | variable | byte data of a file, size is the same as the applicable File Size value in Entries
+
+(repeated per count)
+| Name | Size (per element) | Description |
+| :-:|:-:|:-:|
+| tag key | (int32)0x4 | indicates key by index
+| File Name | variable | a string(int16 indicates length, then Little endian Unicode string of specified length) indicating value of tag
+
+## File Types
+
+
+| ID | File Type | Extension |
+| :-:|:-:|:-:|
+| 0 |  Skin | *.png
+| 1 |  Cape | *.png
+| 2 |  Texture | *.png
+| 3 |  UI Data | *.fui
+| 4 |  Info | '0'
+| 5 |  Texture Pack Info | (x16|x32|x64)Info.pck
+| 6 |  Localisation | *.loc
+| 7 |  Game Rules | GameRules.grf
+| 8 |  Audio | audio.pck
+| 9 |  Colour Table | colours.col
+| 10 |  Game Rules Header | GameRules.grh
+| 11 |  Skin Data | Skins.pck
+| 12 |  Models | models.bin
+| 13 |  Behaviours | behaviours.bin
+| 14 |  Material | entityMaterials.bin
+
+
+
+