README : add info about icon build target.

Makefile

@@ -1,5 +1,5 @@
 color 	 = F44336
-photo		 = true
+photo    = true
 extra 	 = true
 build    = $(CURDIR)/build
 src      = $(CURDIR)/tex
@@ -13,14 +13,14 @@ export RESUME_PHOTO := $(photo)
 export RESUME_EXTRA := $(extra)
 
 .PHONY: all
-all: clean image en ru view
+all: clean icon en ru view
 
 .PHONY: clean
 clean: 
 	@rm -rf $(build)
 
-.PHONY: image
-image:
+.PHONY: icon
+icon:
 	@mkdir -p $(build)/image;\
 	cd image/icon;\
 	for file in *; do convert "$$file" -fill "#$$RESUME_COLOR" -colorize 100 $(build)/image/"$$file"; done

README.md

@@ -10,6 +10,7 @@ Taget | Description
 --- | ---
 all | Clean, build and view all languages.
 clean | Clean project from build files.
+icon | Build colored icons.
 en | Build English resume.
 ru | Build Russian resume.
 view | View built resumes in default PDF viewer.