Add Shortcut expansion

wiki/Placeholders.md

@@ -38,6 +38,7 @@ If the command itself isn't there and `NO DOWNLOAD COMMAND` instead is shown, th
 - **[RelCon](#relcon)**
 - **[ScoreboardObjectives](#scoreboardobjectives)**
 - **[Server](#server)**
+- **[Shortcut](#shortcut)**
 - **[Sound](#sound)**
 - **[Spectators](#spectators)**
 - **[SpeedPerSec](#speedpersec)**
@@ -885,6 +886,19 @@ More info can be found here: http://docs.oracle.com/javase/7/docs/api/java/text/
 
 ----
 
+- ### **Shortcut**
+> /papi ecloud download Shortcut
+
+Allows the parsing of large text with placeholders by having them in TXT files stored.
+
+```
+%shortcut_<filename without .txt>%
+```
+
+The file needs to be a TXT and has to be inside the `PlaceholderAPI/shortcuts` directory.
+
+----
+
 - ### **Sound**
 > /papi ecloud download Sound