Minor tweaks to the README

README

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 [htop](http://hisham.hm/htop/)
 ====
@@ -38,8 +38,13 @@ Compilation instructions
 ------------------------
 
 This program is distributed as a standard autotools-based package.
-See the [INSTALL](/INSTALL) file for detailed instructions, but you are
-probably used to the common routine:
+See the [INSTALL](/INSTALL) file for detailed instructions.
+
+When compiling from a release tarball, run:
+
+    ./configure && make
+
+For compiling sources downloaded from the Git repository, run:
 
     ./autogen.sh && ./configure && make