assimp: add page (#1028)

pages/common/assimp.md

@@ -0,0 +1,32 @@
+# assimp
+
+> Command-line client for the Open Asset Import Library.
+> Supports loading of 40+ 3D file formats, and exporting to several popular 3D formats.
+
+- List all supported import formats:
+
+`assimp listext`
+
+- List all supported export formats:
+
+`assimp listexport`
+
+- Convert a file to one of the supported output formats, using the default parameters:
+
+`assimp export {{input_file.stl}} {{output_file.obj}}`
+
+- Convert a file using custom parameters (the dox_cmd.h file in assimp's source code lists available parameters):
+
+`assimp export {{input_file.stl}} {{output_file.obj}} {{parameters}}`
+
+- Display a summary of a 3D file's contents:
+
+`assimp info {{path/to/file}}`
+
+- List all supported subcommands ("verbs"):
+
+`assimp help`
+
+- Get help on a specific subcommand (e.g. the parameters specific to it):
+
+`assimp {{subcommand}} --help`