Let it be extensible (#112)

Makefile

@@ -14,6 +14,8 @@ install: build
 bin: build
 	mkdir -p $(SHARD_BIN)
 	cp ./bin/ameba $(SHARD_BIN)
+run_file:
+	cp -r ./bin/ameba.cr $(SHARD_BIN)
 test: build
 	$(CRYSTAL_BIN) spec
 	./bin/ameba --all

README.md

@@ -73,7 +73,7 @@ install:
   - shards install
 script:
   - crystal spec
-  - bin/ameba
+  - crystal bin/ameba.cr
 ```
 
 Using this config Ameba will inspect files just after the specs run. Travis will also fail

bin/ameba.cr

@@ -0,0 +1,7 @@
+# Require ameba cli which starts the inspection.
+require "ameba/cli"
+
+# Require ameba extensions here which are added as project dependencies.
+# Example:
+#
+# require "ameba-performance"

shard.yml

@@ -11,7 +11,8 @@ targets:
     main: src/cli.cr
 
 scripts:
-  postinstall: make bin
+  # TODO: remove pre-compiled executable in future releases
+  postinstall: make bin && make run_file
 
 executables:
   - ameba