fgm/waiig15: My version of the Writing an Interpreter in Go 1.5 code. @ 515a961a6e98db5e6e59d223ea85545747c5f8ed

My version of the Writing an Interpreter in Go 1.5 code.

Frederic G. MARAND 515a961a6e §1.3 first passing test		6 lat temu
.idea	515a961a6e §1.3 first passing test	6 lat temu
lexer	515a961a6e §1.3 first passing test	6 lat temu
token	515a961a6e §1.3 first passing test	6 lat temu
.gitignore	515a961a6e §1.3 first passing test	6 lat temu
LICENSE.txt	d8ed808de4 Applying MIT license like upstream code.	6 lat temu