Removed nonsensical library attributes, add CI

alire.gpr

@@ -5,8 +5,6 @@ project Alire is
 
    for Source_Dirs use ("index", "index/**", "src");
    for Object_Dir use "obj";
-   for Library_Name use "alire";
-   for Library_Dir use "lib";
 
    package Pretty_Printer is
       for Switches ("ada") use ("--no-separate-is");

shippable.yml

@@ -0,0 +1,14 @@
+language: none # ada
+
+branches:
+    only:
+        - master
+        - devel
+
+build:
+    pre_ci_boot:
+        image_name: reznik/gnat
+        image_tag: gpl.2017.slim
+        pull: true
+    ci:
+        - /opt/gnat/bin/gprbuild -p -P alire_env