Updated properties file key names.

Author: prisonerjohn

resources/library.properties

@@ -5,20 +5,20 @@
 name = ##library.name##
 
 # List of authors. Links can be provided using the syntax [author name](url).
-authorList = [##author.name##](##author.url##)
+authors = [##author.name##](##author.url##)
 
 # A web page for your library, NOT a direct link to where to download it.
 url = ##library.url##
 
-# The category of your library, must be one (or many) of the following:
+# The category (or categories) of your library, must be from the following list:
 #   "3D"            "Animation"     "Compilations"      "Data"          
 #   "Fabrication"   "Geometry"      "GUI"               "Hardware"      
 #   "I/O"           "Language"      "Math"              "Simulation"    
 #   "Sound"         "Utilities"     "Typography"        "Video & Vision"
 # 
 # If a value other than those listed is used, your library will listed as 
-# "Other".
-category = ##library.category##
+# "Other". Many categories must be comma-separated.
+categories = ##library.category##
 
 # A short sentence (or fragment) to summarize the library's function. This will 
 # be shown from inside the PDE when the library is being installed. Avoid 
@@ -44,7 +44,7 @@ paragraph = ##library.paragraph##
 version = ##library.version##  # This must be parsable as an int
 
 # The version as the user will see it. If blank, the version attribute will be 
-# used here.
+# used here. This should be a single word, with no spaces.
 prettyVersion = ##library.prettyVersion##  # This is treated as a String
 
 # The min and max revision of Processing compatible with your library.