[general] added LICENSE file

LICENSE

@@ -0,0 +1,22 @@
+/* Copyright 2018-2019 Philippe Tillet
+* 
+* Permission is hereby granted, free of charge, to any person obtaining 
+* a copy of this software and associated documentation files 
+* (the "Software"), to deal in the Software without restriction, 
+* including without limitation the rights to use, copy, modify, merge, 
+* publish, distribute, sublicense, and/or sell copies of the Software, 
+* and to permit persons to whom the Software is furnished to do so, 
+* subject to the following conditions:
+* 
+* The above copyright notice and this permission notice shall be 
+* included in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+

TODO

@@ -1,7 +0,0 @@
-[Frontend]
-  - SCOPES
-
-[Intermediate Representation]
-  - proper naming scheme
-  - symbols table
-  - separate header for typedef (e.g., type::tile_shapes_t) to reduce compilation time