Do not preprecess package.json

Before this commit, package.json in the project root directory was
preprocessed in order to insert correct version into it. This made it
invalid JSON and thus unusable for npm purposes.

This commit makes package.json a valid JSON by hardcoding the version
into it. I think that introducing this small duplicity is outweighted by
being able to use npm in project root directory. For example, it is now
possible to make the "npm test" command work and introduce Travis CI
integration.

Makefile

@@ -18,12 +18,10 @@ PARSER_OUT_FILE = $(SRC_DIR)/parser.js
 PEGJS_SRC_FILE = $(SRC_DIR)/peg.js
 PEGJS_LIB_FILE = $(LIB_DIR)/peg.js
 
-PACKAGE_JSON_SRC_FILE  = package.json
-PACKAGE_JSON_DIST_FILE = $(DIST_NODE_DIR)/package.json
-
 PEGJS_DIST_FILE_DEV = $(DIST_WEB_DIR)/peg-$(PEGJS_VERSION).js
 PEGJS_DIST_FILE_MIN = $(DIST_WEB_DIR)/peg-$(PEGJS_VERSION).min.js
 
+PACKAGE_JSON_FILE = package.json
 CHANGELOG_FILE    = CHANGELOG
 LICENSE_FILE      = LICENSE
 README_FILE       = README.md
@@ -112,12 +110,12 @@ dist: build
 	  $(LIB_DIR)           \
 	  $(BIN_DIR)           \
 	  $(EXAMPLES_DIR)      \
+	  $(PACKAGE_JSON_FILE) \
 	  $(CHANGELOG_FILE)    \
 	  $(LICENSE_FILE)      \
 	  $(README_FILE)       \
 	  $(VERSION_FILE)      \
 	  $(DIST_NODE_DIR)
-	$(PREPROCESS) $(PACKAGE_JSON_SRC_FILE) > $(PACKAGE_JSON_DIST_FILE)
 
 # Remove distribution file (created by "dist")
 distclean:

package.json

@@ -1,6 +1,6 @@
 {
   "name":        "pegjs",
-  "version":     "@VERSION",
+  "version":     "0.7.0",
   "description": "Parser generator for JavaScript",
   "homepage":    "http://pegjs.majda.cz/",
   "author": {